The probability that the digit 7 doesn't appear among 100 digits is 9/10, or 90%.
The probability that the digit 7 doesn't appear among 100 digits where each digit is one of (0-9) and all sequences are equally likely is given by the probability that all 100 digits are chosen from the set {0, 1, 2, 3, 4, 5, 6, 8, 9}. There are 10 choices for each digit, so there are 10^100 possible sequences of 100 digits. The number of sequences that don't contain the digit 7 is 9^100. Therefore, the probability that the digit 7 doesn't appear among 100 digits is: P(7 doesn't appear) = (9^100) / (10^100) = 9 / 10
Therefore, the probability that the digit 7 doesn't appear among 100 digits is 9/10, or 90%.
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A pole 75 meters tall is stabilized using 3 guy wires spaced 120 degrees apart
around the tower. The guy wires are to be attached to the tower 40 meters up the
tower and anchored 30 meters from the base of the tower. During a wind storm
the tower is bent over between two of the guy wires such that the 2 guy wires are
slack but the third is still tight. The angle that the tight wire makes with the
ground is 34 degrees. How far off vertical is the tower?
The amount the tower is off vertical by a height of h=74.13 m
Let's call the distance from the base of the tower to the point where the guy wire is attached "h".
This distance is 40 meters.
The length of the tight guy wire is:
L = h + 30
Using the Pythagorean theorem,
We can find the length of the guy wire as:
L^2 = h^2 + 30^2
Substituting the value of h = 40, we get:
L^2 = 40^2 + 30^2
L^2 = 1600 + 900
L^2 = 2500
L = 50
Next, we use the tangent function to find the angle between the vertical and the tight guy wire:
tan(34) = L/h
50/40 = tan(34)
Solving for h, we find:
h = L/tan(34)
h = 50/tan(34)
Finally, subtracting h from the height of the tower, we find the amount the tower is off vertical:
75 - h = 75 - 50/tan(34)
75-h = 75-(50/ 0.6745)
75-h = 75-74.12
75-h =0.87
h=75-0.87
h=74.13 m
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What is a 5 number summary with an example?
The five-number summary would therefore be 0, 0.5, 7.5, 44, and 63.
What is a 5 number summary with an example?The first group's median, which is equal to (0 + 1)/2 = 0.5, is in the first quartile's bottom half.The median of the second group is (27 + 61)/2 = 44, which corresponds to the upper or third quartile.The two observations that are the smallest and largest are 0 and 63.The five-number summary would therefore be 0, 0.5, 7.5, 44, and 63.Summary in Five Numbers: ProcedureStarting with the smallest number, arrange your numbers in ascending order.Locate your data set's minimum and maximum in step two.Discover the median in step three.The numbers above and below the median are enclosed in parentheses in step four.Identify Q1 and Q3 in step 5.To learn more about five-number summary refer
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FILL THE BLANK. the term statistics refers to a set of mathematical procedures for ______, _______, and ________ information
Statistics is a set of mathematical procedures used to collect, analyze, and interpret data.
Generally, it involves collecting data from a sample population, organizing the data into a meaningful manner, and then applying statistical methods to draw conclusions from the data. Statistical methods include descriptive statistics, which summarize the data, and inferential statistics, which use the data to make predictions about a larger population.
Descriptive statistics uses various measures to summarize a population, such as the mean, median, and mode. The mean is the average of all the values in a population and is calculated by adding up all the values and dividing by the number of values. The median is the middle value when all the values in a population are arranged from smallest to largest. The mode is the most frequently occurring value in a population.
Inferential statistics uses the data from a sample population to make predictions about a larger population. For example, a researcher might use a statistical test to determine if a certain treatment is effective. The researcher would collect data from a sample of the population, then use a statistical test to determine if the treatment had an effect on the sample population. If the test is statistically significant, then the researcher can conclude that the treatment is likely to have an effect on the larger population.
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A florist has 56 and 70 carnations to make a table centerpiece he wants to put an equal number of roses and carnations into each centerpiece
The maximum number of Centerpieces that could be made by the florist with the given number of roses and carnations is 14.
To Determine the maximum number of centerpieces, we have to find the Least Common Multiple of the given number of Roses and Carnations.
The given values are:
Roses = 56
Carnations = 70
Taking all the factors of both numbers,
we can write them as,
Roses = 1 * 2 * 4 * 7
Carnations = 1 * 2 * 5 * 7
Then, the common factors would be,
= 1 * 2 * 7
= 14
From this we can conclude that the maximum number of centerpieces of roses and carnations that can be made by the florist is 14
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Consider the system of equations 2x + 5y = 1 3x - 4y = 2 How many solutions does this system have? Explain.
The system of equations 2x + 5y = 1 and 3x - 4y = 2 has one solution.
How is the system of equations classified?A pair of equations system can be categorized as follows:
The system has no solution if the y-intercepts are varied but the slopes are the same.
The system has a single solution if the slopes are different.
The system has an endless number of solutions if the slopes and y-intercepts match.
The given system of equations are:
2x + 5y = 1
3x - 4y = 2
Write the equations in the standard form:
5y = -2x + 1
4y = 3x - 2
Here, the slope of equation 1 is -2 and the slope of equation 2 is 3.
We know that if the slope is different the system of equations has one solution.
Hence, the system of equations 2x + 5y = 1 and 3x - 4y = 2 has one solution.
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the angle bisectors of a triangle are concurrent, and their point of concurrency is called the of the triangle.
The point of concurrency of the angle bisectors of a triangle is known as the incenter of a triangle.
The confluence point of the elevations in a triangle is known as the orthocenter. The intersection of three or more lines, rays, segments, or planes is referred to as a point of concurrency.
One of a triangle's concurrent points, the orthocenter. The incenter, circumcenter, and centroid make up the remaining three.The intersection of all three of the triangle's interior angle bisectors is where a triangle's incenter is located. In other words, it can be defined as the point where the internal angle bisectors of the triangle cross.This point will be equidistant from the sides of a triangle, as the central axis’s junction point is the center point of the triangle’s inscribed circle.
A point that is equally spaced from a triangle's sides contains all three of its angle bisectors simultaneously.
Therefore, the point of concurrency of the angle bisectors of a triangle is known as the incenter of a triangle.
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Eric meaure a line to be 2. 98 in long. If the actual meaurement i 3 in, find Eric' relative error to the nearet thouandth
So Eric's relative error to the nearest thousandth is 0.007 or 0.7%.
Relative error can be calculated using the following formula:
Relative error = (|measured value - actual value|) / actual value
In this case, the actual value is 3 inches, and the measured value is 2.98 inches. So, we can calculate the relative error as follows:
Relative error = (|2.98 - 3|) / 3 = (0.02) / 3 = 0.0067
To find the relative error to the nearest thousandth, we round the result to three decimal places:
Relative error = 0.007
So Eric's relative error to the nearest thousandth is 0.007 or 0.7%.
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So Eric's relative error to the nearest thousandth is 0.007 or 0.7%.
The relative error can be calculated using the following formula:
Relative error = (measured value - actual value|) / actual value
In this case, the actual value is 3 inches, and the measured value is 2.98 inches. So, we can calculate the relative error as follows:
Relative error = (|2.98 - 3|) / 3 = (0.02) / 3 = 0.0067
To find the relative error to the nearest thousandth, we round the result to three decimal places:
Relative error = 0.007
So Eric's relative error to the nearest thousandth is 0.007 or 0.7%.
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In thi lab, we will examine the Law of Large Number and ue it to determine if a coin i unfair. A fair coin i equally weighted on each ide. An unfair coin i a coin that weigh more on one ide o that the chance of it landing on a certain ide i more likely. In thi activity, H will repreent the coin landing head up and T will repreent the coin landing tail up. Before you to the coin, ue theoretical probability to determine the probability of the coin landing head up and the probability of the coin landing head down
The probability of a fair coin landing heads up is 0.5
The probability of a fair coin landing heads up is 0.5 and the probability of it landing tails up is also 0.5.
Theoretically, this means that if a fair coin is flipped an infinite number of times, half of the flips will result in heads and half of the flips will result in tails.
In the case of an unfair coin, the probability of landing heads up and the probability of landing tails up will not be equal.
The exact probabilities will depend on the weight of the coin, but one side will have a greater probability of landing face up.
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y = 6 cos(x), y = 12x2 − 3
The equation is y = 12x2 - 3, and it represents a parabola with its vertex at the origin. Its graph is a parabola that slopes downward, and when x = 0, its highest value is 6.
The parabola formed by the equation y = 6cos(x) has its vertex at the origin and faces downward. This equation is expressed as a quadratic function, specifically as y = ax2 + bx + c. Here, an equals 12, b equals 0, and c equals -3. When x = 0, the equation's highest value is 6, indicating that the vertex of the parabola is (0, 6). The value of y drops as x rises, resulting in a parabola that faces downward. Because the graph of this equation is symmetrical around the y-axis, any value of x will have the same y value as any value of -x. The values of this equation recur after a certain amount of time, making it a prime example of a periodic function.
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what is joule equal to
The work (or energy expended) by a one newton (N) force applied across a one meter distance is equivalent to one joule (m).
The SI unit of energy, the joule (symbol J), measures the ability to do work or produce heat. One newton is equal to a force that accelerates a mass of one kilograms (kg) by one meter per second (s) per second. As a result, one joule is equal to one newton meter.
In SI Unit
1 Joule = 1 kgm^2/s^2
In CGS units:
1 Joule = 1 kgm^2/s^2
As we know that 1 kg = 1000 g and 1 m = 100 cm. Now
1 Joule = 1(1000 g) × (100cm)^2/(1s)^2
Now solving
1 Joule = 1000 × 10^4 gcm^2/s^2
1 Joule = 10^7 gcm^2/s^2
As we know that 1 gcm^2/s^2 = 1 erg. So
1 Joule = 10^7 erg
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Yen Luong owns a used pickup truck that she wants to sell. A used-vehicle guide shows that its average retail value is $17,600. She adds $1,700 for 4-wheel drive, $475 for an entertainment system, $800 for a special trim package, and $225 for power locks. She aiso adds $125 for a sliding rear window, $325 for a towing package, ers0 for power windows, and $3,125 for a diesel engine. She deducts 3615 for having a manual transmission. She adds $450 for having less Tham the expected mileage. What is the average retail price of Yen's
vehicle?
The answer we have states that the typical retail cost of Yen's car is $21,210.
Is the retail cost the actual cost?The price that the automaker, or manufacturer, advises that the seller ask for the vehicle is known as the Mfg Suggested Retail Price (MSRP). It is not necessary for it to be the price you really pay. Many buyers haggle to get the automobile for less than the MSRP.
We must add the numbers she added and minus the sums she reduced to obtain the vehicle's average retail price.
$17,600 + $1,700 + $475 + $800 + $225 + $125 + $325 + $3,125 + $450 = $24,825
And let's subtract $3,615 as from manual transmission's cost, and brings us back amount approximately $21,210.
Hence, Yen's car has an average retail price of $21,210.
Therefore, the average retail price of Yen's vehicle is $21,210 .
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There were 24 students in all at the Arts and Academic Academy
program.
9 Students studied Art.
11 Students studied Music.
8 students studied Dance.
3 students studied Art and Music.
4 students studied Art and dance
5 students studied Music and Dance
2 students studied Art, Music and Dance.
Question: How many students did not study Art, Music, or Dance?
Answer: 0 students did not study Art, Music, or Dance.
Step-by-step explanation:
How do you find the scalar and vector projection?
The scalar and vector projection of a vector onto another vector is found using dot product.
The scalar projection of a vector A onto a non-zero vector B is given by:
scalar projection = (A . B) / ||B||
where (A . B) is the dot product of vectors A and B and ||B|| is the magnitude of vector B.
The vector projection of A onto B is given by:
vector projection = (scalar projection) * (unit vector in the direction of B)
The unit vector in the direction of B is given by B/||B||. A unit vector has a magnitude of 1.
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how many vertices does a full 5-ary tree with 100 internal vertices have?
The total number of vertices a full 5-ary tree with 100 internal vertices have is 501.
What is a M-ary Tree ?A tree with m or less offspring at each node is known as an m-ary tree. When m = 2, a binary tree is the particular case, and a ternary tree, which has m = 3 and a maximum of three offspring, is another special case.
A m-ary tree with just a root node has a height of 0, as the height h of an m-ary tree does not include the root node. The maximum depth D of any tree node determines the height of the tree.
In computer science, a collection of nodes often represented hierarchically in the following way is referred to as a "m-ary tree." At the root node, the tree is initiated. A list of pointers to each node's child nodes is kept by each node in the tree. There are less than or as many child nodes as m.
It is given the m-ary tree as 5-ary tree (m)
And the number of Intervals = 100(i)
We can calculate the number of vertices by using
n = m*i + 1 = 100*5 + 1 = 501
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Which of the following describes the best time to begin protecting a seedling crop from infection by nematodes?
A. at the time of ordering the seedlings
B. before ordering the seedlings
C. at the time of planting the seedlings
D. at the first sign of damage to the seedlings
Utilize only nematode-free plants that you buy from reputable nurseries to keep nematodes out of your garden.
What does nematode prevention entail? Utilize only nematode-free plants that you buy from reputable nurseries to keep nematodes out of your garden.Avoid transferring plants or soil from the garden's affected areas to prevent the spread of nematodes.As this further spreads nematodes, don't let irrigation water from around infected plants run off.Warm moist soil in small amounts to 140°F in an oven or by solarization to destroy nematodes that are present in the soil.Nematodes can be eliminated from soil by baking it in an oven for the length of time required to bake a medium-sized potato placed in the middle of the soil, although this method is only viable for small amounts of soil.To learn more about nematode refer
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The best time to begin protecting a seedling crop from infection by nematodes is at the time of ordering the seedlings.
What is Nematodes ?Use only nematode-free plants that you buy from reputable nurseries to keep nematodes out of your garden. Move plants and soil away from nematode-infested areas of the garden to stop the spread of the parasite. Avoid letting irrigation water from plants that are infected run off since nematodes can also spread through this method.
Larvae go through four molts as they develop, with the third stage, the filariform larva, often being the infective stage.
Crop rotation is a cultural method of nematode management that has good potential. Even some cover crops generate compounds that are poisonous to worms. Finding a crop rotation that can starve out all of the nematodes in your soil, though, might be challenging if you have a variety of them there.
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How do pattern in mathematic help individual better undertand the world and predict what come next?
Pattern in mathematic help individual better undertand the world and predict what come next because patterns follow a predictable rule and that rule allows us to predict what will come next.
What is Predictable Rule?
A prediction function is a mathematical function that predicts a future occurrence based on past events. Many other types of functions can be classified as prediction functions, such as those based on likelihood, sufficiency, and plausibility.
Reasons:
Patterns are more than just beautiful designs (though they frequently are), they follow a predictable law, and that rule allows us to forecast what will happen next. Mathematics, according to mathematicians, is the study of patterns—patterns and structure in numbers, as well as patterns and structure in geometry.
Mathematical tools can explain and improve the way the world works. Mathematical modeling has the potential to save lives, aid in policy and decision-making, and optimize economic growth. It can also be used to better understand the Universe and the conditions required for life to thrive.
Scientists, like everyone else, rarely, if ever, make accurate predictions. The future remains unpredictable regardless of the data and mathematical models available. As a result, scientists must account for mistake in our fundamental equation. In other words, Y = f(X) + E, where "E" represents our incapacity to forecast accurately.
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Patterns in mathematic help individual better understand the world and predict what comes next because patterns follow a predictable rule and that rule allows us to predict what will come next.
What is the Predictable Rule?
A prediction function is a mathematical function that predicts a future occurrence based on past events. Many other types of functions can be classified as prediction functions, such as those based on likelihood, sufficiency, and plausibility.
Reasons:
Patterns are more than just beautiful designs (though they frequently are), they follow a predictable law, and that rule allows us to forecast what will happen next. Mathematics, according to mathematicians, is the study of patterns—patterns and structure in numbers, as well as patterns and structure in geometry.
Mathematical tools can explain and improve the way the world works. Mathematical modeling has the potential to save lives, aid in policy and decision-making, and optimize economic growth. It can also be used to better understand the Universe and the conditions required for life to thrive.
Scientists, like everyone else, rarely, if ever, make accurate predictions. The future remains unpredictable regardless of the data and mathematical models available. As a result, scientists must account for mistake in our fundamental equation. In other words, Y = f(X) + E, where "E" represents our incapacity to forecast accurately.
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find the function f(x) whose tangent line has the slope (1 x√)127x√ for any x≠0 and whose graph passes through the point (9,89).
therefore, the function [tex]f(x)=\frac{1}{6}(1+\sqrt{x})(\sqrt{1+\sqrt{x})}-7/12[/tex] whose tangent slope is given.
In Geometry, the tangent is defined as a line touching circles or an ellipse at only one point. Suppose a line touches the curve at P, then the point “P” is called the point of tangency. In other words, it is defined as the line which represents the slope of a curve at that point.
We have the slope of the function as-
[tex]=\sqrt{\frac{1+\sqrt(x)}{8 \sqrt{x}}[/tex]
passes through the point (9,3/4).
Now, from the Fundamental Theorem of Calculus, we can integrate f′(x)
to get f(x). And then using the point that they gave us we can solve for the constant of integration. Do you know how to proceed from here? Do you know how to integrate that?
[tex]f'(x)=\sqrt{1+\sqrt{x}}/8 \sqrt{x}\\\\x=u^2\\\\2uf'(u^2)=\frac{\sqrt{1+u}}{{4}}}\\\\f(u^2)=\frac{1}{6}(1+u)\sqrt{1+u}+c\\\\f(x)=\frac{1}{6}(1+\sqrt{x})(\sqrt{1+\sqrt{x})+c[/tex]
the tangent passes through the (9,3/4)
[tex]\frac{3}{4}=\frac{1}{6}(1+3)(\sqrt{1+3})+c\\\\3/4=8/6+c\\3/4-4/3=c\\\\c=-7/12[/tex]
therefore, the function [tex]f(x)=\frac{1}{6}(1+\sqrt{x})(\sqrt{1+\sqrt{x})}-7/12[/tex]
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The base of a solid oblique pyramid is an equilateral triangle with a base edge length of 18 inches.
The base of a solid oblique pyramid is an equilateral triangle with a base edge length of 18 inches has height of triangular base as 9√2 inches.
We are given that.
Length of equilateral triangle = a =18 inches
Base is an equilateral triangle.
height of the triangular base of the pyramid
h= a.cosθ
Each angle of equilateral triangle is equivalent to 60 degree
θ = 60/2
θ = 30 degree
Substitute the values,
Height of triangular base of the pyramid,
h=18.cos30
h = 18x √3/2 in
Using the value of
Cos30 = √3/2
Height of triangular base of the pyramid, h= 9√3 inches
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How tall will each candle be at 11:00 PM when
the Johnsons put the candles out for the night?
3
in.
4
Each candle will be
inches tall
8 in.
5:00 PM
6:00 PM
7:00 PM
The height of each candle at 11:00 PM will be 3.5 inches.
This is because each candle starts at 8 inches tall and decreases by 3/4 of an inch per hour as it burns
To find out the height of each candle at 11:00 PM, we need to calculate the total change in height of each candle over the 6 hours it was burning.
Each hour, the height of each candle changes by -3/4 inch. So over 6 hours, the height of each candle changes by:
= -3/4 * 6= -4.5 inches.Since each candle started at 8 inches, the height of each candle at 11:00 PM will be:
= 8 - 4.5 = 3.5 inches.This question is incomplete and should be provided as:
When the Johnson family lights candles at 5:00 PM, each candle is 8 inches tall. The height of each candle changes by -3/4 inch for each hour that it burns. How tall will each candle be at 11:00 PM when the Johnsons put the candles out for the night? Each candle will be___inches tall.Learn more about candle length here: brainly.com/question/30364605
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The sum of the first 6 terms of a geometric sequence is 7812. The common ratio is 5. What is the second term of the sequence?.
The second term of the geometric sequence is 1260
The sum of the first 6 terms of a geometric sequence is 7812. This means that the formula for the sum of the first n terms of a geometric sequence, Sn = a(1-r^n)/(1-r), can be used to solve for the first term, a. 7812 = a(1-5^6)/(1-5). Solving for a, the first term is equal to 252.
The common ratio is 5, meaning that each term of the sequence is 5 times the previous term. Therefore, the second term is equal to 252 * 5, or 1260. This can also be seen by looking at the sequence, 252, 1260, 6300, 31500, 157500, 787500.
To conclude, the second term of the geometric sequence is 1260. This was calculated by taking the first term and multiplying it by the common ratio, 5.
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Find the values of a and b that make the following piecewise defined function both continuous and differentiable everywhere. f(x) = 3x + 4, X<-3
2x2 + ax + b. X>-3
The values of a and b that make the function both continuous and differentiable everywhere are a = -3 and b = 19.
What do you mean by function?A function is a mathematical concept that assigns a unique output value for each input value. It is a rule that takes in an input or set of inputs and maps it to a specific output. Functions are represented by symbols, usually denoted by a letter, such as "f".
In mathematical notation, a function is usually expressed as "f(x)" where "x" is the input and "f(x)" is the corresponding output. For example, a function could be defined as f(x) = x^2, which means that for any value of x, the function will calculate and return the square of that value.
Functions play a central role in mathematics and are used to model real-world phenomena and to study the relationships between variables. They are also used in computer programming to perform specific tasks, such as converting temperatures from Celsius to Fahrenheit or calculating the square root of a number.
To make the function continuous at x = -3, the value of f(-3) must be equal for both the first and second parts of the definition. That is, 3 * -3 + 4 = -3 * -3 + a * -3 + b. Solving for a and b gives us:
a = -3
b = 19
To make the function differentiable at x = -3, the limits of the first and second parts of the definition must be equal, and their derivatives must also be equal.
The limit from the left of f(-3) is:
[tex]\lim_{x \to \ -3}[/tex]f(x) = 3 * -3 + 4 = 5
The limit from the right of f(-3) is:
[tex]\lim_{x \to \ -3}[/tex] + f(x) = -3 × -3 + a × -3 + b = -3 × -3 + 19 = 19
So the function is continuous at x = -3. To check for differentiability, we find the derivative of the first part:
f'(x) = 3
And the derivative of the second part:
f'(x) = -6x + a
The derivative of the two parts must be equal at x = -3, so we have:
3 = -6 × -3 + a
3 = 18 - a
a = -15
This value of a is different from the value we found in the first step, so the function is not differentiable at x = -3. To make it differentiable, we must choose the value of a that makes the function continuous, which is a = -3.
So the values of a and b that make the function both continuous and differentiable everywhere are a = -3 and b = 19.
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Conider the equation a(3-x)=2xb
What value of a and b make the olution of the equation x=-2
Value of a and b make the solution of the equation x=-2 is a=1, b=1.
Given the equation: a(3-x)=-2x+b
If the solution of the equation = -2
Then to find the values of a and b, we substitute = -2 into the equation.
a(3-x) = -2x+b
a(3-(-2)) = -2(-2)+b
5a=4+b
= 5a-b=4
If we make the substitution a=1, b=1 into the abov 5(1)-1= 4 is true.
Therefore: a=1, b=1
The elements in the system of linear equations 2 variables. Variables, namely modifiers or substitutes for a number whose value is not clearly known. Variables are usually symbolized by letters, such as a, b, c, … x, y, z. For example, if there is a number multiplied by 2 then subtracted by 9 and the result is 3, then the form of the equation is 2x – 9 = 3. So x is a variable in the equation. Coefficient, which is a number that describes the number of similar variables.The coefficients are located in front of the variables. For example, there are 2 pencils and 4 markers, if written in the equation is:
Pencil = x , marker = y
So the equation is 2x + 5y. So, because x and y are variables, the numbers 2 and 5 are coefficients.
Constants, namely the value of a number that is constant because it is not followed by a variable behind it. For example the equation 2x + 5y + 7. The constant for this equation is 7, because there is no variable that follows 7. Term, namely the parts of an equation consisting of coefficients, variables, and constants. For example, there is the equation 7x -y + 4, then the terms of the equation are 6x, -y, and 4.Your question is incomplete but most probably your full question was:
Consider the equation a(3-x)=-2x+b
What value of a and b make the solution of the equation x=-2?
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For the above distribution, find the mean.
Answer:
3.5
Step-by-step explanation:
1 x 2 = 2
2 x 6 = 12
3 x 4 = 12
4 x 1 = 4
5 x 2 = 10
6 x 5 = 30
1+1+2+2+2+2+2+2+3+3+3+3+4+5+5+6+6+6+6+6 = 70
70 / 20 = 3.5
the proportion of eligible voters in the next election who will vote for the incumbent is assumed to be 53.3%. what is the probability that in a random sample of 400 voters, less than 48.9% say they will vote for the incumbent?
The probability is P(z < -1.76) = 0.0040
Voter turnout is a helpful statistic that indicates how engaged voters were in a particular election. Generally, this is understood as the percentage of voters who vote in a given election and is calculated by dividing the number of votes by the number of voters.
People's participation in the election is measured by voter turnout figures. Turnout indicates the per cent of eligible voters who actually cast their vote. 1. In India, the poor, illiterate and underprivileged people vote in larger proportion as compared to the rich and privileged sections.
In statistics, a population proportion refers to the fraction of individuals in a population with a certain characteristic.
The sample proportion is a random variable: it varies from sample to sample in a way that cannot be predicted with certainty. Viewed as a random variable it will be written ˆP. It has a mean μˆP and a standard deviation σˆP. Here are formulas for their values.
z = (phat - p)/sqrt(p*(1-p)/n
where phat = sample proportion
p = population proportion
n = sample size
here phat = 0.489, p = 0.533 and n=400
z = (0.489 - 0.533)/sqrt(0.533*0.467/400)
z = -1.76
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The probability is P(z < -1.76) = 0.0040 in a random sample of 400 voters, less than 48.9% say they will vote for the incumbent.
A useful metric that reveals how involved people were in a specific election is voter turnout. Calculated by dividing the total number of votes by the total number of voters, this is typically viewed as the percentage of voters who participate in a particular election.
Voter turnout numbers are used to gauge voter involvement in elections. The turnout rate represents the proportion of eligible voters who actually cast a ballot. 1. Compared to the wealthy and privileged parts, more impoverished, ignorant, and underprivileged individuals vote in India.
The percentage of people who share a particular attribute within a population is referred to as a population proportion in statistics.
The formula is:
[tex]Z=\frac{(P_{hat}-P) }{\sqrt{\frac{P*(1-P)}{n} } }[/tex]
Where
[tex]P_{hat}[/tex] = sample proportion
P = population proportion
n = sample size
Here [tex]P_{hat}[/tex] = 0.489, p = 0.533 and n=400
[tex]Z=\frac{(0.489-0.533)}{\sqrt{\frac{(0.533*0.467)}{400} } }[/tex]
[tex]Z=-1.76[/tex]
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Rectangle jklm is congruent to a 4 inch by 7 inch rectangle. How many different values are possible for the length of segment j m?.
A congruent rectangle is a rectangle that has the same size and shape as another rectangle. In other words, two rectangles are congruent if they have the same length and width.
Since the rectangle is 4 inches by 7 inches, one of the dimensions represents the length and the other represents the width. The length and the width can be interchanged to form a different rectangle with the same area.
Since the rectangle is congruent to the 4-inch by 7-inch rectangle, the length and width of the rectangle are either 4 inches or 7 inches. Therefore, the length of segment JM can be either 4 inches or 7 inches.
So, there are two possible values for the length of segment JM: 4 inches and 7 inches.
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Determine b so that f(x)is continuous if
f(x)= {4x+9 x≤2
4x2+bx+1 x≤2
b=
The value of b that makes the function f(x) continuous at x = 2 is b = 4. The complete function f(x) = {4x + 9, x ≤ 2; 4x^2 + 4x + 1, x > 2} is now continuous at x = 2.
How to get the b using continuous function?For a function to be continuous, its value must be the same at the point where two different pieces of the function meet, and the limit of the function must exist at that point.
In this case, we have two different pieces of the function: f(x) = 4x + 9 for x ≤ 2, and f(x) = 4x^2 + bx + 1 for x > 2. To make the function continuous at x = 2, the values of f(x) for x = 2 must be the same for both pieces.
According to question:Let's plug in x = 2 into both pieces:
f(2) = 4 * 2 + 9 = 17 for x ≤ 2
f(2) = 4 * 2^2 + b * 2 + 1 = 8 + 2b + 1 = 9 + 2b for x > 2
Equating these two values, we get:
17 = 9 + 2b
Solving for b:
b = (17 - 9) / 2 = 4
So, the value of b that makes the function f(x) continuous at x = 2 is b = 4. The complete function f(x) = {4x + 9, x ≤ 2; 4x^2 + 4x + 1, x > 2} is now continuous at x = 2.
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Drag the tiles to the correct boxes to complete the pairs.
Jeff is a bird watcher. Every year in the first week of spring, he visits the Hawk Mountain Sanctuary in Pennsylvania. Last year, he saw 12 Turkish vultures, 2 bald eagles, 4 northern goshawks, and 7 red-tailed hawks. Jeff didn’t see any other birds. This year, the sanctuary authorities are expecting 175 birds during the time he visits. Use this data to predict the count of each bird that will be in the sanctuary during this year’s visit.
red-tailed hawks
bald eagles
Turkish vultures
northern goshawks
Predicted Count
Bird
49
arrowBoth
28
arrowBoth
14
arrowBoth
84
arrowBoth
Data to predict the count of each bird that will be in the sanctuary during this year's visit is red-tailed hawks, Turkish vultures, northern goshawks and bald eagles.
What does predict mean in math?
In general, prediction is the process of determining the magnitude of statistical variates at some future point of time.
12 + 2 + 4 + 7 = 25 (The total number of birds observed in the last year)
Turkish vultures = 175 × 12 / 25 = 84
bald eagles = 175 × 2 / 25 = 14
northern goshawks = 175 × 4 / 25 = 28
red-tailed hawks = 175 × 7/ 25 = 49
So,
49 ↔ red-tailed hawks
84 ↔ Turkish vultures
28 ↔ northern goshawks
14 ↔ bald eagles
Hence, data to predict the count of each bird that will be in the sanctuary during this year's visit is red-tailed hawks, Turkish vultures, northern goshawks and bald eagles.
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To predict the count of each bird that will be in the sanctuary during this year's visit, we need to assume that the proportion of each bird species in the sanctuary remains the same as it was last year when Jeff visited.
Last year, Jeff saw a total of 12 Turkish vultures + 2 bald eagles + 4 northern goshawks + 7 red-tailed hawks = 25 birds.
So, the proportion of each bird species in the sanctuary last year was:
Turkish vultures: 12/25 = 48%
Bald eagles: 2/25 = 8%
Northern goshawks: 4/25 = 16%
Red-tailed hawks: 7/25 = 28%
Using these proportions, we can predict the count of each bird species in the sanctuary this year:
Turkish vultures: 48% of 175 birds = 84 birds
Bald eagles: 8% of 175 birds = 14 birds
Northern goshawks: 16% of 175 birds = 28 birds
Red-tailed hawks: 28% of 175 birds = 49 birds
These are the predicted counts of each bird species in the sanctuary during this year's visit.
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A runner is training for a half marathon. On Wednesday, she ran 6 miles in 50 minutes. On Thursday, she ran 4 miles in 32 minutes. Assume she ran at a constant rate each day. On which day did she run faster? By how much faster did she run?
The day that she run faster is given as follows:
Thursday.
She ran 0.3 miles per hour faster on Thursday than on Wednesday.
What is the relation between velocity, distance and time?Velocity is distance divided by time, hence the following equation is built to model the relationship between these variables:
v = d/t.
Considering the time in hours, each hour = 60 minutes, the velocity on Wednesday is given as follows:
v = 6/(50/60)
v = 7.2 miles per hour.
The velocity on Thursday is given as follows:
v = 4/(32/60)
v = 7.5 miles per hour. -> faster, as 7.5 > 7.2.
The difference is of:
7.5 - 7.2 = 0.3 miles per hour.
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What are the coordinates of point B on AC such that the ratio of AB to AC is 5:6
Coordinates of point B are (5x₂+6x₁)/11 and (5y₂+6y₁)/11
What is the section formula in coordinate geometry?
When the line segment is divided internally in the ratio m:n, we use this formula. That is when point C lies somewhere between points A and B. p= (mx₂+nx₁)/(m+n) & q= (my₂+ny₁)/(m+n)
Given here, point B on AC such that the ratio of AB to AC is 5:6
Let the point B(p,q) internally divide the line joining points A(x₁, y₁) and C(x₂, y₂) in the ratio m : n , then,
p= (mx₂+nx₁)/(m+n)
q= (my₂+ny₁)/(m+n)
Here. m=5 and n=6
p=(5x₂+6x₁)/11 , q=(5y₂+6y₁)/11
Hence, the Coordinates of point B are (5x₂+6x₁)/11 and (5y₂+6y₁)/11
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if 3/4 quart of lemonade concentrate is mixed with 6 and 2/3 quarts of water to make lemonade for 40 people, how many uarts of lemonade concentrate are needed to make the lemonade for 24 people
[tex]\frac{9}{20}[/tex] Quarts of lemonade concentrate are needed to make the lemonade for 24 people.
What is the meaning of multiple proportion?The law of many proportions states that when two components combine to generate more than one compound, the combined weights of each element are in a ratio of tiny whole numbers.The right response is John Dalton. Due to the fact that the English chemist John Dalton first declared this law of multiple proportions in 1803, it is also known as Dalton's law.Factor: A quantity or number that, when multiplied by another, yields the specified expression or number. a number that may be divided by another without leaving a residual is said to be multiple.A fraction multiplied by another fraction, an integer, or a set of variables is referred to as a fraction. The steps for multiplying fractions are as follows: Add the numerator to the numerator to multiply. Add the denominator to the denominator and multiply.Given data :
For 40 people = 3 / 4 quart lemon + 6 and 2/3 quarts of water
For 24 people = ?
Multiply proportion the given :
[tex]\frac{3}{4}[/tex] x [tex]\frac{24}{40}[/tex] = [tex]\frac{9}{20}[/tex] Quarts
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