Look at the data in this table. Write the line of best fit for this data.
Speed, x (miles per hour) 20
30 40 50 60
Braking distance, y (feet)
20
45
80
125
180

Answer:

the answer is 3) 6r-6+5r+20

The value of y is 4.

What is an inverse function?

The inverse function of a function f in mathematics is a function that reverses the operation of f. If f is bijective, then and only if it is, the inverse of f exists.

Here, we have

Given: If f varies inversely as x, and y= 2 when x= 2, find y when x= 1.

We have to find the value of f.

f ∝ 1/g

f₁ ×g₁ = f₂ ×g₂

Let the required value of f = x and g = y

Inserting in equation (1) and we get

2 ×2 = 1 ×y

4 = y

Hence, the value of y is 4.

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Answer: y = ax2 + bx + c

Step-by-step explanation:

Step 1: The equation of any parabola is given by y = ax2 + bx + c, where a, b, and c are constants.

Step 2: We can calculate the axis of symmetry (x-coordinate) by using the formula x = -b/2a.

Step 3: We can calculate the value of a by looking at the width of the parabola.

Step 4: Once we have the values of a and b, we can substitute them into the equation to get the equation of the parabola: y = ax2 + bx + c.

Area of trapezoid = 675 in², Area of triangle = 54 in² and Total Shaded Area = 621 in²

A trapezοid, alsο knοwn as a trapezium, is a flat clοsed shape having 4 straight sides, with οne pair οf parallel sides.

The parallel sides οf a trapezium are knοwn as the bases, and its nοn-parallel sides are called legs. A trapezium can alsο have parallel legs. The parallel sides can be hοrizοntal, vertical οr slanting.

The perpendicular distance between the parallel sides is called the altitude.

From the figure given:

Area of trapezoid [tex]\rm = \frac{a + b}{2} \cdot h[/tex]

Area of trapezoid [tex]\rm = \frac{24 + 51}{2} \cdot 18[/tex]

Area of trapezoid = 675 in²

Area of triangle = 1/2 × base × height

Area of triangle = 1/2 × 9 × 12

Area of triangle = 54 in²

Total Shaded Area = 675 - 54

Total Shaded Area = 621 in²

Thus, Area of trapezoid = 675 in², Area of triangle = 54 in² and Total Shaded Area = 621 in²

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Bridget needs 98 seed packets to have a total of 6,762 flowers in her garden. Since she can't buy fractional seed packets, she would need to buy 99 seed packets.

What is Algebraic expression ?

An algebraic expression is a mathematical phrase that can contain variables, constants, and mathematical operations such as addition, subtraction, multiplication, division, and exponentiation. Algebraic expressions are used to represent and solve problems in many areas of mathematics, science, engineering, and finance.

Since the relationship between the number of flowers and the number of seed packets is directly proportional, we can set up a proportion to solve the problem.

Let x be the number of seed packets Bridget needs to have a total of 6,762 flowers in her garden.

We can set up the proportion:

624 flowers ÷ 96 seed packets = 6,762 flowers  ÷ x seed packets

To solve for x, we can cross-multiply and simplify:

624 * x = 96 * 6,762

x = (96 * 6,762)  ÷ 6,624

x = 98.38

Therefore, Bridget needs 98 seed packets to have a total of 6,762 flowers in her garden. Since she can't buy fractional seed packets, she would need to buy 99 seed packets.

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The correct solution to a system of linear equations is:

Find where the two lines intersect.

To find the solution to a system of linear equations on a graph, you can follow these steps:

1. Graph the two equations on the same coordinate system. This will give you two lines that represent the equations.

2. Look for the point of intersection between the two lines. This point represents the solution to the system of equations.

3. If the lines do not intersect, then the system of equations has no solution. If the lines overlap or coincide with each other, then the system of equations has infinitely many solutions.

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The solution of a system of equations can be obtained from their graph by the points where the graph intersects.

The correct option is therefore;

A system of equations are a set of two or more equations that share common variables.

The solution of a system of equations is a set of values of the input variables that satisfies the equations in the system of equations

The graph of an equation is the set of points that satisfies the relationship between the variables in the equation.

Therefore, the solution of a system of equations can be obtained from a graph by finding the point of intersection of the graphs of the equations in the system, which is the point that agrees with all the equations in the equation system.
The correct option is therefore; Find where the two lines intersect

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Answer:

We know that when 5(2x-3) = 25 x = 4 because when you plug 4 back into the equation you get 25=25. To solve this equation first you will distribute 5 into 2x -3 you will then get 10x-15 = 25. Then you will add 15 to both sides and get 10x = 40, next divide 10 from both sides and you will get x=4. To check this you can plug 4 back into the equation so it will look like this. 5(2(4)-3) = 25, first you will solve what is in the parenthesis, you will set 5(5)=25. Then multiply 5 by 5 and you will get 25=25. This proves that when 5(2x-3) = 25 x = 4

Step-by-step explanation:

The scale factor of the dilation in size from the first piece of pizza to the second piece of pizza is 1.6.

We must compare the corresponding side lengths of the two triangles in order to determine the scale factor for the size expansion from the first to the second piece of pizza. The scaling factor will equal the ratio of any two matching side lengths because the two triangles are similar.

Let's select the first pizza's sides that correlate to the second pizza's sides. The first pizza has a base that is 7.5 inches in diameter and sides that are 2.75 inches apiece. The base and sides of the second pizza are also 12 inches in diameter. To determine the scale factor, we can utilize the ratio of the corresponding side lengths:

Scale factor = (second pizza's matching side length) / (corresponding side length in first pizza)

Either side length can be used as the equivalent side length. Let's decide that the corresponding side length is 2.75 inches. Next, we have

scale factor=4.4/2.7

If we simplify, we get:

1.6 scale factor

As a result, the scale factor for the size difference between the first and second pizzas is 1.6. In all dimensions, this indicates that the second pizza is 1.6 times bigger than the first.

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If you repeat this experiment 600 times, you predict that 300 repetitions will result in picking the same color marble twice.

To predict the number of repetitions that will result in picking the same color marble twice in 600 experiments, we need to find the probability of this event occurring and then multiply it by the total number of experiments.

Calculate the probability of picking the same color marble twice:

Assuming there are two colors (A and B) and an equal number of each

color, the probability of picking the same color twice is:

P(AA) = P(A) × P(A|A) = (1/2) × (1/2) = 1/4

P(BB) = P(B) × P(B|B) = (1/2) × (1/2) = 1/4

Add the probabilities of picking two marbles of the same color:

P(same color twice) = P(AA) + P(BB) = 1/4 + 1/4 = 1/2

Multiply the probability by the total number of experiments:

Predicted repetitions = Probability × Total experiments

                                   = (1/2) × 600

                                   = 300

So, if you repeat this experiment 600 times, you predict that 300

repetitions will result in picking the same color marble twice.

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Let's assume the height of the wall as 'h' meters.

Given, the perimeter of the wall = area of the wall

The perimeter of the wall = 2(length + breadth) = 2(7+h) = 14+2h meters

The area of the wall = length × breadth = 7 × h = 7h square meters

According to the problem, the perimeter and area of the wall have the same value.

So, 7h = 14 + 2h

Subtracting 2h from both sides, we get:

5h = 14

Dividing both sides by 5, we get:

h = 2.8 meters

Therefore, the height of the wall is 2.8 meters.

Hence, the answer is 2.8 meters

Answer:

2.8 meters

I've done the quiz

Answer:  40.25

Step-by-step explanation:

Answer:

$40.25

Step-by-step explanation:

35% of $115 = 0.35 × $115 = $40.25

We have a parallelogram and a half of circle.

The area of parallelogram are: A=basis*height

The area of circle are: A=πr², where r is the radius (half of diameter).  Thus the half circle have Area equals to:

Approaching π to 3,14

parallelogram:

b=26

h=13

A=13*26

A=338

Half circle:

r=12

A=(3,14*12²)/2

A=226,08

Total Area of the figure are:

A=338+226,08

A=564,08

The car traveled at a faster rate in the last six minutes compared to the first six minutes.

In the first six minutes, the car traveled 2 miles, which means it had a speed of (2 miles)/(6 minutes) = 0.33 miles per minute.

In the last six minutes, the car traveled 8 miles, which means it had a speed of (8 miles)/(6 minutes) = 1.33 miles per minute.

Comparing the two speeds, we can see that the car traveled at a faster rate in the last six minutes. This could be because the driver increased the speed or drove on a more favorable road surface. It is also possible that the driver had to slow down in the first six minutes due to traffic or other road conditions.

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a. Yes, the estimate of age based on 500 plots is influenced by sampling error.

Sampling error occurs because the sample is only a portion of the entire population, and the sample may not perfectly represent the whole population.

Therefore, the estimate of the mean age derived from the sample might deviate from the true mean age of the entire population.

b. If the investigators had used a sample of only 100 plots instead of 500, the sampling error of the estimate of mean age would likely increase. As the sample size decreases, the likelihood of the sample representing the whole population accurately decreases as well.

Consequently, the deviation between the sample means age and the true population mean age would likely be larger, leading to a higher sampling error.

Sampling error refers to the difference or discrepancy between a sample's characteristics and the corresponding characteristics of the entire population from which the sample was drawn. It arises due to the fact that a sample is only a subset of the population, and the sample may not perfectly represent the whole population. Sampling error can impact the accuracy of statistical inferences and conclusions drawn from the sample, such as estimates of mean, variance, or correlation.

As the sample size decreases, the likelihood of the sample representing the whole population accurately decreases as well, leading to higher sampling error.

Therefore, minimizing sampling error is crucial in ensuring the validity and reliability of research findings.

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Answer:

The surface area of the figure is 40 + 5π.

Step-by-step explanation:

The answers are:

The directrix, which is made up of all locations (x, y) in a plane that are evenly spaced from it, and the focus, which is a fixed point but not on the directrix, are collectively referred to as a parabola. The graph of the parabola has the standard shape of a parabola with vertex (0,0) as well as the x-axis as its axis of symmetry.

Apollonius, who found many properties of conic sections, is responsible for the term "parabola." The word has the meaning "application," and as Apollonius had shown, this idea of "application of areas" is related to this curve. Pappus is responsible for the focus-directrix characteristic of the parabola and other conic sections.

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The gas used by Abby while travelling in her pizza delivery route is 1/4.

As per the given question here we have to implement the basic principles of subtraction along with application of LCM.

The total amount of gas that Abby had in her car = 11/12

After coming to pizzeria the amount of gas left in her tank = 3/4

Here, we have to perform Subtraction to find out the amount of gas used for travelling. Therefore,

= 11/12 - 3/4

performing the LCM, we get

= 11 - 9/12

= 3/12 => 1/4

The gas used by Abby while travelling in her pizza delivery route is 1/4.

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the discontinuities of a rational function involves finding the values of x that make the denominator equal to zero, while finding the asymptotes of a rational function involves examining the behavior of the function as x approaches certain values.

Describe the function.

There will be questions on every subject, including created and real places as well as algebraic variable design, on the midterm test. a schematic illustrating the connections between various components that work together to produce the same outcome. A service is made up of many unique parts that work together to produce unique outcomes for each input.

To find the discontinuities of a rational function, we need to determine where the function is undefined. In general, a rational function is a function of the form:

f(x) = p(x) / q(x)

where p(x) and q(x) are polynomials in x, and q(x) is not the zero polynomial. The rational function f(x) is undefined at any value of x that makes the denominator q(x) equal to zero, since division by zero is undefined.

Therefore, to find the discontinuities of a rational function, we need to solve the equation q(x) = 0. The values of x that make q(x) equal to zero are called the "zeros" or "roots" of the denominator q(x). These values of x are the discontinuity points of the function, since the function is undefined at those points.

On the other hand, to find the asymptotes of a rational function, we need to examine the behavior of the function as x approaches certain values. In general, a rational function may have three types of asymptotes: horizontal, vertical, and oblique (also called slant).

Vertical asymptotes occur when the function approaches positive or negative infinity as x approaches a certain value, typically where the denominator q(x) equals zero.

Horizontal asymptotes occur when the function approaches a constant value as x approaches positive or negative infinity.

Oblique asymptotes occur when the degree of the numerator is exactly one greater than the degree of the denominator. In this case, the function approaches a straight line (i.e., a slant asymptote) as x approaches positive or negative infinity.

To summarize, finding the discontinuities of a rational function involves finding the values of x that make the denominator equal to zero, while finding the asymptotes of a rational function involves examining the behavior of the function as x approaches certain values.

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The following are the expressions for the perimeter and area for the rhombus:

9). perimeter = 4(x + 2) in

area = (x + 10)(x + 9)/2 in²

10). perimeter = 4(x - 3) mm

area = (x - 8)(x + 6)/2 mm²

A rhombus is a two-dimensional geometric shape with four equal sides and four equal angles, but the angles are not necessarily 90 degrees. It is a type of parallelogram.

Two same triangles make up the rhombus so we evaluate for the area expression of one triangle and multiply the result by 2 to get the areas. And multiply each side by 4 to get the expression for the perimeters

area of a triangle = 1/2 × base × height

9). base = (x + 10) and height = (x + 9)/2

area of one triangle = 1/2 × (x + 10) × (x + 9)/2

area of one triangle = (x + 10)(x + 9)/4

area of rhombus = 2 × (x + 10)(x + 9)/4

area of rhombus = (x + 10)(x + 9)/2 in²

perimeter of rhombus = 4(x + 2) in

10). base = (x - 8) and height = (x + 6)/2

area of one triangle = 1/2 × (x - 8) × (x + 6)/2

area of one triangle = (x - 8)(x + 6)/4

area of rhombus = 2 × (x - 8)(x + 6)/4

area of rhombus = (x - 8)(x + 6)/2 mm²

perimeter of rhombus = 4(x - 3) mm

Therefore, the rhombus have the expression for the perimeter and area as:

9). perimeter = 4(x + 2) in

area = (x + 10)(x + 9)/2 in²

10). perimeter = 4(x - 3) mm

area = (x - 8)(x + 6)/2 mm²

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The volume of the cube-shaped  = 1,331 volume of the hole cut out of the block = 125 cubic inches Subtract 1331 - 125 = 1206, the correct option is A

volume of the hole cut out of the block = 5 inches x 5 inches x 5 inches

volume of the hole cut out of the block = 125 cubic inches.

volume of the cube-shaped block = 11 inches x 11 inches x 11 inches

volume of the cube-shaped block = 1,331

To find the volume of the wood remaining after the hole is cut out, we can subtract the volume of the hole from the volume of the block:

1,331 cubic inches - 125 cubic inches = 1,206 cubic inches

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9 bananas can be bought with $3.25, and we will have $0.10 left over.

Selling price is the price at which a product or service is sold to customers. It is the amount of money that a business receives in exchange for its goods or services. The selling price is often determined by considering factors such as production costs, market demand, and competition.

Number of bananas = $3.25 ÷ $0.35/banana

Number of bananas = 9.285 (rounded to 3 decimal places)

Since we cannot buy a fractional part of a banana, we need to round down to the nearest whole number. Therefore, we can buy 9 bananas with $3.25.

Total cost of bananas = 9 bananas × $0.35/banana

Total cost of bananas = $3.15

So, we will not use all our money. We will have $3.25 - $3.15 = $0.10 left over.

Therefore, we can buy 9 bananas with $3.25, and we will have $0.10 left over.

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answer

W

50°

X

Xy-step explanation:

the limit is:
lim (x→∞) x⁹ * e^(-x⁸) = 0

To find the limit of the given function as x approaches infinity, we can use L'Hospital's Rule since it involves an indeterminate form. The given function is:

lim (x→∞) x⁹ * e^(-x⁸)

First, let's rewrite the function as a fraction:

lim (x→∞) x⁹ / e^(x⁸)

Now, since this is an indeterminate form (infinity over infinity), we can apply L'Hospital's Rule by taking the derivative of both the numerator and the denominator with respect to x:

Numerator derivative: d(x⁹)/dx = 9x⁸
Denominator derivative: d(e^(x⁸))/dx = x⁸ * e^(x⁸)

Now, rewrite the limit with the derivatives:

lim (x→∞) (9x⁸) / (x⁸ * e^(x⁸))

We can simplify this expression:

lim (x→∞) 9 / e^(x⁸)

Now, as x approaches infinity, the denominator becomes infinitely large, making the whole fraction approach 0. Therefore, the limit is:

lim (x→∞) x⁹ * e^(-x⁸) = 0

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Distance from Breadth of one side of the wall = L/3 units

Distance from one corner i.e from Breadth = L - L/3 - L/6 = L/2

Distance from floor i.e surface = H/6 units

Distance from Ceiling= H - H/6 = 5H/6 units

Considering the room to be in the shape of a Cuboid as well as the Bed to be in the shape of a Cuboid.

Dimensions of Room:

In mathematics, space is the only light without elements; its magnitude or cardinality (number of elements in the set) is zero.

Let the Length of the cuboid which is in the shape of a room = L

The breadth of the cuboid which is in the shape of a room = B

Height of cuboid which is in the shape of a room = H

Considering, L>B>H

Dimension of Bed

Length = L/6 units

Breadth = B/4 units

Height = H/6 units

Taking one corner at origin i.e (0,0,0)

You can keep your bed at any place inside the room, but you want your bed to be at that place inside the room where the window is located so that proper ventilation and sunlight can enter your room.

Taking the bed to be in the middle of the room near the window and considering its upper face

Distance from one corner i.e from length= B- B/4 = 3B/4 Units

Distance from other corner =  0 Units

Distance from Breadth of one side of the wall = L/3 units

Distance from one corner i.e. from Breadth = L - L/3 - L/6 = L/2

Distance from floor i.e. surface = H/6 units

Distance from Ceiling= H - H/6 = 5H/6 units

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Answer: The histogram is roughly symmetrical

Step-by-step explanation:

I took the test

27.42 cm2

you multiply the length of a shape by its width.

the amount of money available can be represented by the following inequality: 5a + 7b ≤ 200

What is inequality?

Mathematical expressions with inequalities on both sides are known as inequalities. In an inequality, we compare two values as opposed to equations. In between, the equal sign is changed to a less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

Since the aprons with 2 pockets cost $5 each and the aprons with 4 pockets cost $7 each, the constraint on the number of aprons that can be purchased based on

Hence, the amount of money available can be represented by the following inequality: 5a + 7b ≤ 200

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The rate at which the volume of water is changing with respect to time when the height of the water is 5 feet is (5.2/3)π√3 cubic feet per minute.

When the height is 5 feet, it is stated that the height of the water in a tank rises at a pace of 0.26 feet per minute.

When the water reaches five feet high, we can determine the rate of change in water volume with respect to time using the model from part (c).

We may calculate the volume of water in the tank using the formula V = (1/3)r2h, where r is equal to 3 feet and h is the height of the water in feet.

The Pythagorean theorem can be used to get the tank's radius at a height of 5 feet: r = ((102 - 52) = 75 = 53 feet.

Taking the derivative of the volume with respect to time, we get:

dV/dt = (1/3)π(2r)(dh/dt)

Substituting the values we have:

dV/dt = (1/3)π(2(5√3))(0.26)

= (5.2/3)π√3 cubic feet per minute

As a result, when the water level is 5 feet high, the rate of change in water volume with respect to time is (5.2/3)3 cubic feet per minute.

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The measure of the smallest angle is 30° in an octagon when the interior angles are in the ratio 1:2:3:4:5:6:7:8.

The sum of the interior angles of an octagon is (8 - 2) x 180° = 1080°.

Let x be the minimum angle measure and write down the other angle equations concerning x using the ratios given.

2x, 3x, 4x, 5x, 6x, 7x, 8x.

by adding all the angles we get,

x + 2x + 3x + 4x + 5x + 6x + 7x + 8x = 36x.

Since the sum of the interior angles of an octagon is 1080°,

Simplifying the equation:

36x = 1080

x = 30

The minimum angular dimension is x = 30°. 

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