Answer:
Infinitely many solutions
Explanation:
1) subtract “1” from both sides to get y by itself
Y=-2x-1
2) 4y+8x=-4 share a gcf of “4” so you can divide the whole equation by 4
y+2y=-1
Now substitute “-2x-1” as y
(-2x-1)+2x=-1
-2x and 2x cancel each other and so does -1 and -1
Hence, this system has infinitely many solutions
Answer:
x = 0, y = 1.
Step-by-step explanation:
We can solve for the variables x and y by using substitution. Let's start by solving the first equation for one of the variables:
-1 = 2x - y
y = 2x + 1
Next, we'll substitute y = 2x + 1 into the second equation:
8x - 4y = -4
8x - 4(2x + 1) = -4
Expanding the second equation:
8x - 8x - 4 = -4
-8x - 4 = -4
-8x = 0
x = 0
Finally, we can use one of the equations to find y:
y = 2x + 1
y = 2(0) + 1
y = 1
So, the solution is x = 0, y = 1.
Hamid has gained weight. He now weighs 88kg which is 10% higher than his normal weight. What is Hamids normal weight?
If Hamid's current weight is 88kg and it is 10% higher than his normal weight, then we can use the following formula to find his normal weight:
Normal weight = Current weight / (1 + 10%)
10% of Hamid's weight is 0.10 * 88kg = 8.8kg
So, Normal weight = 88kg / (1 + 8.8kg) = 88kg / 1.10 = 80kg
Therefore, Hamid's normal weight is 80kg.
What is 80 Inches in Feet?
When 80 inches is converted to feet it will be 6.66667 feet.
How to convert inches to feet?Divide 80 by 12 to convert 80 inches to feet. Using a calculator or long division, we can calculate that 80 inches equals 6.66667 feet. As a result, 80 inches equals 6.66 feet. It is important to note that inches and feet are both length units, so when you convert between the two, you are essentially moving the decimal point in the number two places to the left or right depending on which unit you are converting to. To convert inches to feet, divide the number of inches by 12, because a foot is 12 inches long. Similarly, to convert feet to inches, multiply the number of feet by 12, because there are 12 inches in a foot.Therefore, 80 inches equals 6.66667 feet, and inches to feet can be converted by dividing the number of inches by 12.To learn more about inches refer to :
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randy needs to buy school supplies he needs a headset that cost 30.00 he also needs notebooks that cost 3.00 each format your response using 2 decimal places
Step-by-step explanation:
If Randy needs to buy a headset that costs $30.00 and notebooks that cost $3.00 each, we can calculate the total cost of the supplies as follows:
Let's assume that Randy needs n notebooks.
The total cost of the notebooks will be $3.00 * n.
The total cost of the headset and the notebooks will be $30.00 + $3.00 * n.
So the total cost of the supplies will be $30.00 + $3.00 * n, rounded to 2 decimal places.
Select the correct conversion factor for each step in the following roadmap for a substance with a density of 1 g/mL.
volume (L) ----> volume (mL) ----> mass (g)
The complete conversion roadmap is: Volume (L) ----> volume (mL) ----> mass (g): 1 L * 1000 mL/L = 1000 mL * 1 g/mL = 1000 g
To convert the volume from liters to milliliters, we use the conversion factor of 1000 mL/L. This means that for every 1 liter, there are 1000 milliliters.
Volume (L) ----> volume (mL): 1 L * 1000 mL/L = 1000 mL
To convert volume to mass, we use the density of the substance, which is 1 g/mL. This means that for every 1 milliliter of the substance, it has a mass of 1 gram.
Volume (mL) ----> mass (g): 1000 mL * 1 g/mL = 1000 g
Therefore, the complete conversion roadmap is:
Volume (L) ----> volume (mL) ----> mass (g): 1 L * 1000 mL/L = 1000 mL * 1 g/mL = 1000 g
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A pattern is emerging... the general term is
Plugging in we get, (a) Do the same thing for the recurrence T(n) = 3T(n/2) + O(n). What is the general term in this case? And what value of k should be plugged in to get the answer?
(b) Now try the recurrence , a case which is not covered by the master theorem. Can you solve this too?
The general term for the recurrence T(n) = 3T(n/2) + O(n) is O(nlog3). To get the answer, we should plug in k = log3. For the second recurrence, we cannot use the master theorem since it does not cover this case.
To solve this recurrence, we have to use the substitution method, where we guess a solution of the form T(n) = an^k and then prove that this is indeed a solution. This can be done by substituting the guessed solution back in to the recurrence. If the substitution works, then we have solved the recurrence. If not, we can try different values for a and k until the substitution works.
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shakita is making banners for the homecoming parade she has 4 1/2 yards of felt to make banners if she need 1/4 of a yard for each banner will she have enough felt to make 10 banners if yes will she have any left over if no how much more felt will she need to make the 10 banners
Shakita will have enough felt to make 10 banners and she will have 2 yards left over
How to find the required additional bannersFirst, let's calculate how much felt Shakita needs for 10 banners using multiplication
= 10 banners * 1/4 yard per banner
= 2.5 yards
Comparing this with the amount of felt Shakita has:
Shakita has 4.5 yards of felt, and she needs 2.5 yards to make 10 banners, so she will have:
4.5 yards - 2.5 yards = 2 yards of felt left over.
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A construction company is curretly working on six projects the table shows the progress of each of the projrcts represented as a decimal what Is the range of the progrese of these projects
The range of the progress of the construction company's six projects is 0.82.
The range of data is a measure of its spread. To calculate the range, you subtract the smallest value from the largest value.
The data for this problem is:
Project Progress
u 0.87
v 0.31
w 0.08
x 0.05
y 0.19
z 0.5
In this case, the smallest value is 0.05 (project x) and the largest value is 0.87 (project u), so:
= 0.87 - 0.05 = 0.82This means that the difference between the most advanced project and the least advanced project is 0.82. The range is an important measure of variability and helps in understanding the distribution of data, in this case, the progress of the construction projects.
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Two similar figures have a side ratio of 3:4. The area of the larger figure is 100 square units. What is the area of the smaller figure?
Enter fractions as decimals.
Answer:
Below
Step-by-step explanation:
the sides of the second figure are 4/3 bigger than the first
4/3 * 4/3 * 100 = 177.78 units^2
There are two sides involved in calculating area L x W
so you have to multiply by 4/3 TWICE
A company uses a sketch to plan an advertisement on the side of a building. The lettering on the sketch is ¾ inch tall. In the actual advertisement, the letters must be 34 times as tall. How tall will the letters be on the building?
The letters in the actual advertisement will be 25.5 inches tall.
The height of the letters in the sketch is ¾ inch. To find the height of the letters on the actual advertisement, we have to multiply ¾ inch by 34.
So, ¾ inch x 34 = 25.5 inches
Therefore, the height of the letters on the building will be 25.5 inches.
It's important to understand the relationship between the sketch and the actual advertisement. In this case, the sketch serves as a visual representation to plan the design, but the size of the lettering must be adjusted to fit the intended space. In this case, the lettering needs to be 34 times larger in the actual advertisement than it is in the sketch.
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select the expression that is equivilant to (3d^4)^2
The expression that is equivilant to (3d^4)^2 is 9d^8
How to determine the equivalent expressionFrom the question, we have the following parameters that can be used in our computation:
(3d^4)^2
Remove the bracket
So, we have the following representation
3^2 * d^(4*2)
Evaluate the exponents
9 * d^8
So, we have
9d^8
Hence, the expression is 9d^8
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How to convert 150 pounds to kilograms?
68.0389 convert 150 pounds to kilograms
How do you convert pounds to kilograms?To convert lbs to kg, multiply the given lbs value by 0.45359237 kg. For example, to convert 5 lbs to kilogram, multiply the given 5 lbs by 0.45359237 kg. Therefore, 5 lbs is approximately equal to 2.26796185 kgDivide the number of pounds by 2.2046 to use the standard equation. For example, if you want to convert 50 pounds to kilograms, divide 50 by 2.2046, which is equal to 22.67985 kg. To convert 200 pounds to kilograms, divide 200 by 2.2046, which is equal to 90.71940 kg.To convert ounces to pounds, divide by 16 the mass in ounces. The result will be the mass expressed in poundsTo learn more about convert pounds to kilograms refers to:
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In the autonomous differential equation dx/dt = x(1 - x), the critical point Select the correct answer.
A. x = 0 is semistable B. x = 1 is an attractor C. x = 1 is a repeller
D. x = 0 is an attractor E. x = 1 is semistable
The correct option are: B. x = 1 is an attractor; is the critical point for the given autonomous differential equation.
Explain the term autonomous differential equation?The right-side zeros of an autonomous 1st order differential equation provide the critical points: x' = f(x)
If a sign of said function shifts from positive towards negative, f(x) = 0
a critical point becomes an attractor:if the function's sign flips from negative towards positive, is a repeller.If a function does not reverse signs just at critical point, it is semistable.These critical point characteristics reveal the behaviour of the solutions close to the critical points.The solutions would converge around the critical point around an attractor.
Solve the autonomous differential equation:
dx/dt = x(1 - x),
Put dx/dt = 0
x(1 - x) = 0
x = 0, x = 1
Thus, at x = 1.
The function changes as from positive towards negative.
So, the solution becomes critical point.
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what is the area of the region between the curves y=sinx and y=cosx that contains the point (0,0)
The area of the region between the curves y=sinx and y=cosx that contains the point (0,0) is 4π.
The area of the region between the curves y=sinx and y=cosx that contains the point (0,0) is the integral of the absolute value of the difference between the two functions. This is expressed mathematically as:
∫|sinx-cosx|dx
Using integration by parts, we can break this integral into two parts:
∫sinx dx - ∫cosx dx
Integrating each of these parts separately and substituting in the limits of integration from 0 to 2π, we get the following:
2π - 0 - (-2π)
Simplifying, this gives us the area of the region as 4π.
Therefore, the area of the region between the curves y=sinx and y=cosx that contains the point (0,0) is 4π.
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The value of a painting increases by 32 percent every year. If the painting
was purchased 2 years ago for $12,430, how much is it worth today?
The painting is worth $22,225.62 today.
Compound interest is computed on the principal as well as the interest accumulated over the preceding period. It differs from simple interest in that interest is not added to the principal when computing interest for the next month.
Compound annual growth rate (CAGR) is the average yearly growth rate of an investment over a time period greater than one year. It is one of the most reliable methods for calculating and determining returns for individual assets, investment portfolios, and anything else whose value might grow or decline over time.
The formula to calculate the increase in the value of the painting is:
value_today = value_yesterday * (1 + 0.32)^number_of_years
Plugging in the given values:
value_today = $12,430 * (1 + 0.32)^2 = $12,430 * 1.32^2
= $12,430 * 1.7984
= $22,225.62
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Almost all medical schools in the united states require students to take the medical college admission test (mcat). The total score of the four sections on the test ranges from 472 to 528. In spring of 2019, the mean score was 500. 9, with a standard deviation of 10. 6.
What is the question for this so I can answer it?
Determine lim x→ 4 f(x) given the definition of f(x) below. (If the limit does not exist, enter DNE.) if= -2x² + 3x - 1 if x-4
-1 if -4 < x < 1
-2x² + x if x ≥ 1
The limit as x approaches 4 of f(x) is equal to -2 * 4^2 + 3 * 4 - 1 = 15.
What is function?A function is an equation with just one solution for y for every x. A function produces exactly one output for each input of a certain type. Instead of y, it is usual to call a function f(x) or g(x). f(2) indicates that we should discover our function's value when x equals 2. Example. A function is defined technically as a relation between a set of inputs and a set of potential outputs, where each input is associated to exactly one output. A function is an equation that depicts the connection between an input x and an output y, with precisely one output for each input. Another name for input is domain, while another one for output is range.
Here,
The limit of f(x) as x approaches 4 is given by the value of f(4).
For x = 4, the definition of f(x) is:
-2x^2 + 3x - 1 = -2 * 4^2 + 3 * 4 - 1 = 15.
Therefore, the limit of f(x) as x approaches 4 is 15.
So, lim x→ 4 f(x) = 15.
The limit of f(x) as x approaches 4 is equivalent to -2 * 42 + 3 * 4 - 1 = 15.
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What is the slope of the linear relationship shown on the graph?
A. negative two thirds
B. two thirds
C. negative three halves
D. three halves
Answer:
C. negative three halves
Step-by-step explanation:
Use two points on the line and slope equation to find the slope.
Let the points be (- 4, 4) and (-2, 1).
Then the slope is:
m = (1 - 4)/(-2 - (-4)) = - 3/(-2 + 4) = - 3 / 2This is same as option C.
What are the like terms, coefficients, and constants in the equation 7-5x+1
Answer:
Let's define these terms:
Step-by-step explanation:
A variable is a letter that represents a number.
x and y are common variables for algebra.
A coefficient is a number next to a variable.
Ex: 8x, 8 is the coefficient for the variable x
A constant is a number without a variable.
Ex: 3, -4, and pi are examples of constants.
a strip of paper is available for each whole number length from 1 inch to 15 inches. what is the probability that if a strip is randomly selected, it can be used as the third side of a triangle with two sides of 5 and 7 inches? express your answer as a common fraction.
The third side of triangle is 7/15.
The third side of a triangle must satisfy the triangle inequality, which states that the sum of any two sides must be greater than the third side. For a triangle with sides of 5 and 7 inches, the third side must be less than 5 + 7 = 12 inches. So, the possible lengths for the third side are 5, 6, 7, 8, 9, 10, 11 inches.
There are 15 total possible lengths for the strip, so the probability of randomly selecting a strip that can be used as the third side of a triangle with sides of 5 and 7 inches is 7/15.
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The third side of triangle is 7/15.
The third side of a triangle must satisfy the triangle inequality, which states that the sum of any two sides must be greater than the third side. For a triangle with sides of 5 and 7 inches, the third side must be less than 5 + 7 = 12 inches. So, the possible lengths for the third side are 5, 6, 7, 8, 9, 10, 11 inches.
There are 15 total possible lengths for the strip, so the probability of randomly selecting a strip that can be used as the third side of a triangle with sides of 5 and 7 inches is 7/15.
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How to Find a 5 Number Summary:____
Put the numbers in ascending order from smallest to largest, the minimum is the smallest number in the list, The maximum is the largest number in the list, The median is found in the middle of the list and the lower quartile is the median of the first half of the data.
What is meant by number?A number is a numerical unit of measurement and labelling in mathematics.
The natural numbers 1, 2, 3, 4, and so on are the first examples.
Number words are a linguistic way to express numbers.
More commonly, specific numbers can be represented using symbols known as numerals; for instance, the numeral "5" stands in for the number five.
Basic numerals are frequently grouped in a numeral system, which is an ordered manner to represent any number, because only a small number of symbols can be learned.
The Hindu-Arabic numeral system, which enables the depiction of any number using a combination of ten basic numeric symbols, is the most widely used system of numeration.
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Please help me with this
Answer: cos(L) = 0.3684
Step-by-step explanation:
To solve, we need to identify what its asking first.
It wants us to find the value of the cos L
We know that Cosine is equivalent to the [tex]\frac{adjacent}{hypotenuse}[/tex] sides.
We also know that Cos L is an angle.
If we look at the picture, we first need to locate where L is. Then we need to find the cosine of it.
The adjacent side to L is 7.
The hypotenuse is 19.
we can rewrite this information into an equation:
[tex]cos (L)=\frac{7}{19}[/tex]
Since it wants cos L value to the nearest hundredth, we will use a calculator to divide.
cos(L) = 0.3684
There is a bag filled with 4 blue and 5 red marbles.
A marble is taken at random from the bag, the colour is noted and then it is replaced
Another marble is taken at random.
What is the probability of getting 2 of the same colour?
Answer:
41/81
Step-by-step explanation:
There are a total of 4 blue marbles, 5 red marbles giving 9 total number of marbles
Let P(B₁) =Probability of getting a blue marble on the first draw
Let P(B₂) =Probability of getting a blue marble on the second draw
Let P(R₁) =Probability of getting a red marble on the first draw
Let P(B₂) =Probability of getting a red marble on the second draw
P(B₁) = Number of blue marbles ÷ total number of marbles = 4/9
Since the marble is replaced before the second draw, the total number of blue marbles and total number of both marbles is the same as for the first draw
P(B₂) = P(B₁) = 4/9 also
Probability of getting 2 blue marbles on 2 consecutive draws= P(B₁B₂)
= 4/9 x 4/9 = 16/81
P(R₁) = Number of red marbles ÷ total number of marbles = 5/9
P(getting a red marble on the second draw) = P(R₁R₂) = 5/9
Probability of getting 2 red marbles on 2 consecutive draws = P(R₁R₂)
= 5/9 x 5/9 = 25/81
Since we are asked the probability of getting 2 of the same color we can rephrase the same question as
P(two of same color) = P(B₁B₂ ∪ R₁R₂) = P(B₁B₂) + P(R₁R₂) = 16/81 + 25/81 = 41/81
In an effort to protect the environment, Ryan is trying to get the citizens of his hometown, Centerville, to waste less water. A study indicated that they wasted 9,500 gallons of water last year and 5,130 gallons of water this year. What is the percent of decrease in the amount of water wasted yearly?
Answer:
13
Step-by-step explanation:
Calculate the values of a that satisfy the
equation
2(4x + 8 - x²) = 9x + 7
Give each of your answers to 3 s.f.
The values of x in the equation is x = -2.39 and x = 1.89
How to determine the value of x in the equationFrom the question, we have the following parameters that can be used in our computation:
2(4x + 8 - x²) = 9x + 7
Open brackets
This gives
8x + 16 - 2x² = 9x + 7
Evaluate the like terms
2x² + x - 9 = 0
Using a graphing calculator, we have the following values
x = -2.386 and x = 1.886
Approximate
x = -2.39 and x = 1.89
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Wats the answer to b
Answer:
Below
Step-by-step explanation:
y = 3/20 * x where y is in miles and x is in minutes
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
please help me and give all steps to it
Answer:
24501.42 m³
Step-by-step explanation:
You want the volume of a cylinder that is 34 m in diameter and 27 m high.
VolumeThe volume of a cylinder is given by the formula ...
V = πr²h
where r is the radius, half the diameter, and h is the height.
Use the given values in the formula and do the arithmetic. The volume is about ...
24501.42 m³
__
Additional comment
The answer shown has 7 significant figures. The value used for π has 3 significant figures, so any figures in the answer after the first 3 are incorrect. When a more accurate value of π is used, the answer rounds to 24513.85 m³.
a jar contains marbles of the following colors: 3 white, 6 red, and 9 green. two marbles are randomly taken from that jar, consecutively and with replacement. what is the probability that the first marble is white and the second is green?
The probability that the first marble is white and the second is green is 0.083.
The probability of drawing a white marble first and then a green marble can be calculated by multiplying the individual probabilities of drawing each marble. The probability of drawing a white marble is 3/18 and the probability of drawing a green marble is 9/18. So, the probability that the first marble is white and the second is green is
= probability of drawing a white marble x
probability of drawing a green marble
= (3/18) * (9/18)
= 0.16666666666 * 0.5
= 0.083.
This means that if we randomly select two marbles, with replacement, from the jar, there is a 0.083, or 8.3%, chance that the first marble will be white and the second will be green. The probability is calculated by taking the product of the individual probabilities of each event happening.
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estimate the solutions of the equation f(x) = −1. (enter your answers as a comma-separated list.)
We can use graphical or numerical methods to estimate the solutions os equations by finding the x-values at which the graph of f(x) intersects the x-axis at y = -1.
What is the equation?We must identify the values of x that cause f(x) to equal -1 in order to estimate the solutions to the equation f(x) = -1.
It is challenging to identify the precise solutions of the equation without knowing the precise shape of the function f. (x). However, by locating the x-values where the graph of f(x) intersects the x-axis at y = -1, we can use graphic or numerical techniques to approximate the solutions. Based on the degree, there are three primary sorts of equations. linear, cubic, and quadratic equations.
How are equations solved?Equation Solving: A General Principle
On each side of the equation, merge like terms and remove parentheses.
You can use either addition or subtraction to separate the variable word.
Use multiplication or division to find the solution for a variable.
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Find the value of y.
answers:
5√ 3
10
5√ 2
5
The value of y in the given triangle is 5√3. Therefore, option A is the correct answer.
What are trigonometric ratios?The sides and angles of a right-angled triangle are dealt with in Trigonometry. The ratios of acute angles are called trigonometric ratios of angles. The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec).
In the given triangle, one of the leg of right tringle is 5 units.
We know that, tanθ= Opposite/Adjacent
tan60° =y/5
√3 =y/5
y=5√3
Therefore, option A is the correct answer.
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A computer store buys a computer system at a cost of $463.80. The selling price was first at $773, but then the store advertised a 20% markdown on the system. Answer parts a and b.
Answer:
618.4
Step-by-step explanation:
Based on the given conditions, formulate: 773 x (1 - 20%)
Calculate the sum or difference: 773 × 0.8
Calculate the product or quotient: 618.4
Answer: 618.4