The probability of p(copper)=0.28
Probability model for choosing a bead?Probability is a measure of the likelihood or chance that an event will occur, expressed as a number between 0 and 1, with 0 indicating that the event is impossible and 1 indicating that the event is certain to occur. Probability is a fundamental concept in mathematics, statistics, and science that is used to quantify uncertainty and forecast the likelihood of future events based on available data. Probability is a measure of the likelihood or chance that an event will occur, expressed as a number between 0 and 1, with 0 indicating that the event is impossible and 1 indicating that the event is certain to occur.
Given
Total Beads =112+96+192=400
Placing the bead back to the crate
so the total beads are always 400
copper:112
p(copper)=112/400=0.28
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Deepa invests money in an account paying a simple interest of 1% per year. If no money will be added or removed from the investment, what should she multiply her current balance by to find her total balance in a year in one step?
For Deepa to find his yearly balance in a single step, he must multiply his money by 1.01
Comparing basic and compound interest ?Simple interest is often a predetermined percentage of the principle amount borrowed or lent paid or received over a specific time period. Borrowers are required to pay interest on interest in addition to principal since compound interest accrues and is added to the accrued interest from prior periods.
The following calculation must be done in order to determine what Deepa should multiply his current balance by in order to find his total balance in a year in one step if no money will be added to or removed from the investment. Deepa invests money in an account that pays a simple interest rate of 1% per year.
Current balance = X
Interest = 1% = 1/100 = 0.01
Interest + principal = 1.01
1.01X = Total balance in a year
Deepa must therefore multiply her money by 1.01 in order to determine it in a single step.
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What is the Formula of Sum of Cubes of n Natural Numbers?
The formula for the sum of cubes of the first n natural numbers is:
(1^3 + 2^3 + 3^3 + ... + n^3) = (1 + 2 + 3 + ... + n)^2
What is the formula of sum of cubes?The sum of cubes of the first n natural numbers is the sum of cubes of the numbers 1, 2, 3, ..., n.To find the formula, we can start by using the formula for the sum of the first n natural numbers: (1 + 2 + 3 + ... + n) = n(n+1)/2.We can then cube this expression: (n(n+1)/2)^3 = n^3(n+1)^3/8.Expanding the cube on the right side, we get: n^3(n+1)^3/8 = n^3(n^3 + 3n^2 + 3n + 1)/8.Combining like terms and simplifying, we get the final result: (1^3 + 2^3 + 3^3 + ... + n^3) = (1 + 2 + 3 + ... + n)^2.This formula can be used to efficiently calculate the sum of cubes of any set of natural numbers, without having to sum the cubes individually.To learn more about natural numbers refer:
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A small indoor greenhouse (herbarium) is made entirely of glass panes (including base) held together with tape. It is 30 cm long, 25 cm wide and 25 cm high. (1) What is the area of the glass? (ii) How much of tape is needed for all the 12 edges?
The area of the small indoor greenhouse (herbarium) is equal to 4,250 cm².
The length of tape needed for all the 12 edges is equal to 320 cm.
How to calculate the area of the glass?Mathematically, the total surface area (TSA) of this glass panes (including base) can be calculated by using this mathematical expression:
Total surface area (TSA) = 2[lb + lh + bh]
Where:
l represent the length of the glass panes.b represent the breadth of the glass panes.h represent the height of the glass panes.Total surface area (TSA) = 2[(30 × 25) + (30 × 25) + (25 × 25)]
Total surface area (TSA) = 2[750 + 750 + 625]
Total surface area (TSA) = 2[2,125]
Total surface area (TSA) = 4,250 cm².
Next, we would determine the length of tape needed for all the 12 edges by using this mathematical expression:
Total length = 4(l + b + h)
Total length = 4(30 + 25 + 25)
Total length = 4(80)
Total length = 320 cm.
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Amanda invests 5000 in a CD at an annual rate of 2%. What will her investment be worth at the end of three years?
I got $5,300. But probably wrong.
The response to a question has three alternatives: A,B , and C. A sample of 120 responses provides 54 A ,24 B, and 42C . Show the frequency and relative frequency distributions (use 2 decimal for the relative frequency column)
Class Frequency Relative Frequency
A
B
C
As a result, we obtain the frequency and relative frequency distributions:
Data Relative Frequency
A 0.5
B 0.19
C 0.31
What is relative frequency?The relative frequency is the ratio of the frequency to the total frequency corresponding to each entry.
Here,
Here we have a total sample as: 120
Also, the frequency corresponding to A is: 60
Corresponding to B is: 23
and corresponding to C is: 37
Hence, the Frequency table is as follows:
Data Frequency
A 60
B 23
C 37
The relative frequency table is given by:
Data Relative Frequency
A 60/120=0.5
B 23/120=0.19
C 37/120=0.31
Hence, we get the frequency and relative frequency distributions:
Data Relative Frequency
A 0.5
B 0.19
C 0.31
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Ramon took a math tet and got 35 correct anwer and 15 incorrect anwer what i the percentage of the correct anwer
The percentage of correct answers=70
what i the percentage of the correct answer?
Number of correct answers=35
number of incorrect answers=15
total number of questions=number of correct answers + number of total incorrect answers
=35+15
=50
Percentage of correct answers = number of correct answers×100/Total i number of question
=35×100/50
= 3500/50
=70
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Question content area top
Part 1
Error Analysis You and a friend are doing math homework together. You have to solve the equation 5x + 4x - 68 = 34 - 8x . Your friend arrives at the incorrect answer x = -2 . Find the correct value of x. Then find the error your friend possibly made.
What possible error could your friend have made to get x = -2 ?
A.
Your friend should have added 68 to each side of the equation, but instead subtracted 68 from the right side.
B.
Your friend should have added 5x and 4x to get a sum of 9x, but instead got a sum of 8x.
C.
Your friend should have added 8x to each side of the equation, but instead subtracted 8x from the left side.
The value of x is 6
The possible error could your friend have made to get x = -2 is Your friend should have added 5x and 4x to get a sum of 9x, but instead got a sum of 8x. Option C
What are algebraic expressions?Algebraic expressions are described as expressions that are composed of variable, terms, coefficients, factors and constants.
These expressions are also made up of mathematical or arithmetic operations. These operations include;
SubtractionDivisionMultiplicationFloor divisionAdditionBracketParenthesesFrom the information given, we have the equation;
5x + 4x - 68 = 34 - 8x
collect like terms
5x + 4x + 8x = 34 + 68
Add or subtract the like terms
17x = 102
Divide both sides by the coefficient of the variable, we get;
17x/17 = 102/17
x = 6
Hence, the value is 6
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Trigonometry Finding side length
Please help!!
The value of x for each given right angled triangle are:
x = 5.6x = 4.52x = 4√3x = 6.26x = 5.87Please remember that these answers are calculated using calculator.
Remember that a triangle has the sum of angles 180°; then since we have a right angled triangle, then the sum of the non-right angles in the triangle should be equal to 90°.
We use Θ as the note for the unknown non-right angle.
1. 36° + Θ = 90°
Θ = 54°
Under the Sinus Law:
x / sin 54 = 7 / sin 90
x / 0.8 = 7 / 1
x = 5.6
2. 41° + Θ = 90°
Θ = 49°
Under the Sinus Law:
x / sin 49 = 6 / sin 90
x / 0.75 = 6 / 1
x = 4.52
3. 30° + Θ = 90°
Θ = 60°
Under the Sinus Law:
x / sin 90 = 6 / sin 60
x / 1 = 6 / (√3/2)
x = 4√3
4. 37° + Θ = 90°
Θ = 53°
Under the Sinus Law:
5 / sin 53 = x / sin 90
x = 5 / 0.79
x = 6.26
5. 33° + Θ = 90°
Θ = 57°
Under the Sinus Law:
7 / sin 90 = x / sin 57
7 / 1 = x / 0.84
x = 5.87
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How much are 1.5 pounds in kilograms?
1 pound is approximately equal to 0.45359237 kilograms. Therefore, 1.5 pounds is approximately equal to 0.45359237 x 1.5 = 0.68 kg
How to convert pounds into kilograms?It's a common conversion to make, as the pound is a unit of weight commonly used in the United States, while the kilogram is the standard unit of mass in the International System of Units (SI).Knowing the conversion from pounds to kilograms can be useful in many situations, such as when traveling to countries that use the metric system, or when converting recipes from American to metric measurements.Additionally, converting pounds to kilograms can be useful in a variety of industries, such as health and fitness, where people may need to track their weight in either unit.Keep in mind that the conversion between pounds and kilograms is not exact, as the conversion factor is an approximation.For more precise conversions, it's best to use a conversion tool or calculator to ensure accurate results.To learn more about pound to kilogram refer:
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he first three terms of a sequence are given. round to the nearest thousandth (if necessary). 2,5,8,...2,5,8,... find the 41st term.find the 41st term.
The first three terms of the sequence are 2, 5, and 8.The 41st term of this sequence is 122.
What is the 41st term of the sequence?To find the 41st term of this sequence, you can use the common difference method.Step 1: Determine the common difference by subtracting the second term from the first term, and then subtracting the third term from the second term.The common difference is:5 - 2 = 3and8 - 5 = 3Step 2: Since the common difference is the same for each pair of consecutive terms, we can conclude that this sequence is an arithmetic sequence.Step 3: To find the 41st term, you can use the formula for the nth term of an arithmetic sequence:an = a1 + (n - 1)dwhere a1 is the first term, n is the term you're looking for, and d is the common difference.Substituting in the values:an = 2 + (41 - 1)3 = 2 + (40)3 = 2 + 120 = 122So the 41st term of this sequence is 122.
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suppose limx→0f(x)=1 and limx→0g(x)=−7. name the rule or limit law that is used to accomplish each step of the following calculation.
Step 1: limx→0[f(x)+g(x)] .Rule or Limit Law used: Sum Rule for Limits.
Step 2: limx→0f(x)+limx→0g(x) .Rule or Limit Law used: Limit of a Sum Rule.
Step 1: limx→0[f(x)+g(x)]
This first step is using the sum Rule for Limits. This rule states that the limit of the sum of two functions is equal to the sum of the limits of the individual functions. So in this case, the limit of the sum of f(x) and g(x) is equal to the sum of the limits of f(x) and g(x) individually.
Step 2: limx→0f(x)+limx→0g(x)
This second step uses the Limit of a Sum Rule. This rule states that the limit of the sum of two functions is equal to the sum of the individual limits of the functions. So in this case, the limit of the sum of f(x) and g(x) is equal to the sum of the individual limits of f(x) and g(x). This is the same result as in the first step, but using a different rule.
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9.prices in dollars of smartphones:311,309,312,314,399,312
The five-number summary for the given data include the following:
Minimum = 312.First quartile = 310.5.Median = 309.Third quartile = 335.25.Maximum = 399.What is a box-and-whisker plot?In Mathematics, a box-and-whisker plot can be defined as a type of chart that can be used to graphically or visually represent the five-number summary of a data set with respect to locality, skewness, and spread.
Based on the information provided above, the five-number summary for the given data set include the following:
Minimum = 312.First quartile = 310.5.Median = 309.Third quartile = 335.25.Maximum = 399.By critically observing the box-and-whisker plots or boxplot (see attachment), we can logically deduce that it has a median of 309 with an interquartile range (IQR) as follows;
Interquartile range (IQR) = Q₃ - Q₁
Interquartile range (IQR) = 335.25 - 310.5
Interquartile range (IQR) = 24.75
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Complete Question:
Determine the five-number summary for the given data. Prices in dollars of smartphones:
311, 309, 312, 314, 399, 312
what is the slope that goes through the points (-1,4) and (14,-2)
The slope is:
-2/5Work/explanation:
To find the slope, I use the slope formula
[tex]\sf{m=\dfrac{y_2-y_1}{x_2-x_1}}[/tex]
where m = slope.
Plug in the data
[tex]\sf{m=\dfrac{-2-4}{14-(-1)}[/tex]
Simplify
[tex]\sf{m=\dfrac{-6}{14+1}}[/tex]
Simplify the denominator
[tex]\sf{m=-\dfrac{6}{15}}[/tex]
Finally, reduce the fraction to its lowest terms.
[tex]\sf{m=-\dfrac{2}{5}}[/tex]
Hence, the slope is -2/5.109.What is the inverse natural function of the cosecant?a) Secantb) Sinec) Cosined) Tangent
The inverse of the cosecant function is the secant function so option A is correct.
In mathematics, the inverse of a function "f" is another function "g" such that when "f" is applied to an input "x", the result is "x". And when "g" is applied to the result, the original input "x" is recovered. This relationship can be expressed as: f(g(x)) = x and g(f(x)) = x.
The cosecant function is defined as the reciprocal of the sine function, so csc(x) = 1/sin(x). The inverse of the cosecant function is the secant function, which is defined as the reciprocal of the cosine function, so sec(x) = 1/cos(x).
In other words, when the cosecant function is applied to an angle "x", the result is 1/sin(x), and when the secant function is applied to the result, the original angle "x" is recovered. This relationship can be expressed as: sec(csc(x)) = x and csc(sec(x)) = x.
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Natalie has $300 in a savings account that earns 15% interest per year. How much interest will she earn in 4 years?
Answer:
Below
Step-by-step explanation:
Interest = p r t p = principle = 300 r = decimal interest = .14 t = years = 4
Interest = 300 * .15 * 4 = 180 dollars
24) Find the quotient and write the answer in standard form.
(3.6×10 to the power of 10) divided by 5
Answer: Quotient is 3.6*10^10/5 and the standard form is 7.2*10^9
Step-by-step explanation:
Answer:
Step-by-step explanation:
3.6×10∧10÷5=0.72×10∧10
standard form=7.2×10∧9
A farmer sells 6.9 kilograms of apples and pears at the farmer's market.
1/4 of this weight is apples, and the rest is pears. How many kilograms of pears did she sell at the farmer's market?
Answer:
1.725
Step-by-step explanation:
1/4 or .25 multiplied by the total of 6.9
how close to −2 do we have to take x so that the following is satisfied? (give the largest possible value.) 1 (x + 2)6 >
The largest value of x that satisfies the inequality is approximately -1.8639.
To find the largest possible value of x that satisfies the inequality 1/(x + 2)⁶ > 1,000,000, we can start by rearranging the inequality:
1/(x + 2)⁶ > 1,000,000
Taking the reciprocal of both sides:
(x + 2)⁶ < 1/1,000,000
Now, let's take the sixth root of both sides:
x + 2 < (1/1,000,000)[tex]}^{1/6[/tex]
Calculating the right side:
x + 2 < 0.1361
Subtracting 2 from both sides:
x < 0.1361 - 2
x < -1.8639
Therefore, the largest value of x that satisfies the inequality is approximately -1.8639.
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find the distance between the pair of points (-22,20) and (-23,-1)
[tex]\huge\begin{array}{ccc}d=\sqrt{442}=11\sqrt2\end{array}[/tex]
A distance between two points.
The formula:
[tex]A(x_A,\ y_A),\ B(x_B,\ y_B)\\\\|AB|=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}[/tex]
SOLUTION:
We have:
[tex]A(-22,\ 20),\ B(-23,-1)[/tex]
Substitute:
[tex]|AB|=\sqrt{(-23-(-22))^2+(-1-20)^2}=\sqrt{(-1)^2+(-21)^2}\\\\=\sqrt{1+441}=\sqrt{442}=\sqrt{121\cdot2}=\sqrt{121}\cdot\sqrt2=\boxed{11\sqrt2}[/tex]
In triangle QRS the measure of angle RSQ is 117°, and the measure of angle QRS is 23°.
What is the measure of angle SQR in degrees?
Answer:
the angle of SQR = 40°
Step-by-step explanation:
in any triangle, the sum of all angles will be equal to 180°
by adding RSQ and QRS you get 140°
180°-140°=40°
The measurement of angle ∠SQR is 40 degrees
We are given that triangle QRS the measure of angle RSQ is 117°, and the measure of angle QRS is 23°.
Since we know that in any triangle, the sum of all angles will be equal to 180°
To find the total angle of any polygon, use the formula = 180(n-2)
The "n" is number of sides a polygon have. Triangle has 3 sides.
Hence,substitute as n=3 in the formula above.
Total angle in a triangle =180(3-2)= 180(1)
= 180 degrees
∠QRS+∠RSQ+∠SQR=180°
180°-140°=40°
The angle SQR= 40°
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Bonsoir es ce que quelqu'un pourrait m'aider pour cette exercice plus précisément la question 2 et 3.
Merci d'avance
Answer:
2) 1885 km
3) 795 h 46 m 29 s
Step-by-step explanation:
2)
C = 2πr
C = 2 × 3.14159 × 300 km
C = 1885 km
3)
(1000000 km)/ (1885 km/tour) = 530.16477 tours
1 tour = 1 h 30 m = 1.5 h
530.16477 tours = 530.16477 × 1.5 h = 795.7747155 h = 795 h 46 m 29 s
A linear function is shown on the graph
What is the Romain of the function?
Check the picture below.
A person is watching a boat from the top of a lighthouse. The angle of depression from the person to the boat is 28°. The lighthouse is 200 feet tall. How far away is the boat? Round to the nearest foot
The boat is approximately 515 feet away from the lighthouse.
To find the distance from the boat to the lighthouse, we can use trigonometry. The angle of depression from the person to the boat is 28°, and the height of the lighthouse is 200 feet. Let's call the distance from the boat to the lighthouse x. Using the tangent function, we have
tan 28° = 200 / x.Solving for x, we have x = 200 / tan 28°. Approximating this value using a calculator, we have x ≈ 514.7 feet. Rounding to the nearest foot, the boat is approximately 515 feet away from the lighthouse.
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a website requires that passwords only contain alphabetic characters. for each character in checkstr that is not an alphabetic character, replace the character with 'x'.
After the loop has finished executing, the 'newstr' variable should contain 'abcdxxxxxXXXXX'. The newstr variable is set to an empty string and alphabetic, numerical, and symbol characters are replaced with 'x'.
newstr = "abcdxxxxxXXXXXX
1. Initialize a new string variable called 'newstr' set to an empty string.
2. Loop through each character in the 'checkstr' variable.
3. If the character is an alphabetic character, add it to the 'newstr' string.
4. If the character is not an alphabetic character, replace it with 'x' and add it to the 'newstr' string.
5. After the loop has finished executing, the 'newstr' variable should contain 'abcdxxxxxXXXXX'.
The newstr variable is set to an empty string and alphabetic, numerical, and symbol characters are replaced with 'x'.
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The function h(x) = -x +34 models the height of the roof of a house, where x is the horizontal distance from the center of the house. If a raindrop
falls from the end of the roof, how far from the center of the base does it land? Explain your solution.
The distance from the base's center at that time is 18 feet.
What is function?
A relation between a collection of inputs and outputs is known as a function. A function is, to put it simply, a relationship between inputs in which each input is connected to precisely one output. Each function has a range, codomain, and domain. The usual way to refer to a function is as f(x), where x is the input.
A function is typically represented as y = f. (x).
h(x) = 16 ft x is the distance from the base when
h(x) = 16 h(x) = -IxI + 34
when a raindrop falls from the end of the roof.
16 = -IxI + 34
IxI = 34 – 16 = 18
It might land on the roof's opposite end.
The distance from the base's center at that time is 18 feet.
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after driving to a riverfront parking lot, bob plans to run south along the river, turn around, and return to the parking lot, running north along the same path. after running 3.25 miles south, he decides to run for only 50 minutes more. if bob runs at a constant rate of 8 minutes per mile, how many miles farther south can he run and still be able to return to the parking lot in 50 minutes?
A mathematical statement that establishes the equality of two mathematical expressions is the definition of an equation in algebra.
What is meant by equation?The definition of an equation in algebra is a mathematical statement that proves two mathematical expressions are equal. Mathematical equations with two expressions on either side of the "equal to" sign are referred to as simple equations.
Let the distance he walks till turning back be 'd',
The total distance while returning back = d + 3.25 miles
Time per unit mile = 8 minutes,
Total distance he walks after already completing 3.25 miles
= 2d+3.25 miles
Therefore, total time for this distance [tex]$=(2 \mathrm{~d}+3.25) * 8=16 \mathrm{~d}+26$[/tex] minutes,
Given that it will take 50 minutes to get to the car after traveling 3.25 miles south,
Let the equation be
[tex]$$\begin{aligned}& 16 d+26=50 \\& 16 d=24 \\& d=\frac{24}{16}=1.5 \text { miles; }\end{aligned}$$[/tex]
Therefore, the required answer exists be 1.5 miles.
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What are the coordinates of the point?
Responses
(6, −3)
(−3, 6)
(3, 6)
(−3, −6)
Answer: (-3,6)
Step-by-step explanation:
The point is 3 spaces to the left in the second quadrant on the x-axis which is negative
Then it is 6 spaces up on the y-axis which is positive
A univerity tudent completed coure were three credit, and ome coure worth four credit. The tudent earned a total of 54 credit after completing 15 coure. How many coure or four credit did the tudent complete?
The student completed 9 courses of four credits each.
Let x = number of four-credit courses the student completed
If the student completed a total of 15 courses, then the expression for the number of three-credit courses the student completed is:
"15 - x"
If the student earned a total of 54 credits after completing 15 courses, then the equation to show this will be:
4x + 3(15 - x) = 54
Simplify the equation and solve for the value of x.
4x + 45 - 3x = 54
x = 9
Hence, the number of four-credit courses the student completed is 9 course.
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What is the simplest form of (4x3 + 6x – 7) + (3x3 – 5x2 – 5x)
Answer:
4x-4 that's what I gottt
i'll pick you as brainily please quick formula for finding the distance between two points
[tex]Let \: the \: two \: points \: be \: \underline{\underline{A( x_{1} ,y_{1})}} \: and \: \underline{\underline{B \: ( x_{2}, y_{2})}}[/tex]
Then ,
[tex]\boxed{d(AB) = \sqrt{ {( x_{2} - x_{1}) }^{2} + {( y_{2} - y_{1}) }^{2} } }\\ [/tex]
where , d(AB) is the distance between the two points A and B.
hope helpful! :)
Answer:
the Distance Between the two points a and b
Step-by-step explanation:
Distance between two points is the length of the line segment that connects the two points in a plane. The formula to find the distance between the two points is usually given by d=√((x2 – x1)² + (y2 – y1)²). This formula is used to find the distance between any two points on a coordinate plane or x-y plane.