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The time needed for the rocket to be 30 feet of the ground is given as follows:

t = 9.6 seconds.

The quadratic function giving the rocket's height after t seconds is given as follows:

h(t) = -16t² + 150t + 70.

The rocket will be 30 feet of the ground when:

h(t) = 30.

Hence:

-16t² + 150t + 70 = 30

16t² - 150t - 40 = 0.

The coefficients of the quadratic function are given as follows:

a = 16, b = -150, c = -40.

Time is a positive measure, hence, using a quadratic function calculator, the positive root is given as follows:

t = 9.6 seconds.

More can be learned about quadratic functions at https://brainly.com/question/31680326

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Answer:

9.6 seconds

Step-by-step explanation:

Answer:

-10.5

Step-by-step explanation:

Pick two points that the line overlaps. We can see the points are on (0,63) (2,42) and (4,21). Lets use (2,42) and (4,21). To find the rate of change (m) the formula needed is y^2 - y^1 divided by x^2 - x^1. 21-42=-12 over 4-2=2. So we get -10.5 for the rate of change.

Answer:

rate of change is -10.5

Step-by-step explanation:

Answer:

4cm*4cm*4cm

Step-by-step explanation:

64 cube root = 4

4*4 = 16

16*4 = 64

If the cube holds 64 cubic centimeters of water, then each side of the cube must be 4 centimeters long.

Answer: To use the calculator: Enter the corresponding values into the boxes below and ... to and add to. i) In a quadratic equation in the form ax2 bx c 0, if.

Step-by-step explanation:

According to the information, we can infer that some coordinates of this quadratic equation are: (-2, -3), (-1, -0.75), (0, 0), (1, -0.75), and (2, -3)

To solve the quadratic equation, we need to set the equation equal to zero:

Now, we can divide both sides by -0.75 to isolate x^2:

Taking the square root of both sides, we get:

Therefore, the solution to the quadratic equation s(x) = -0.75x^2 is x = 0.

According to the previous information, we can infer that the equation s(x) = -0.75x^2 represents a downward facing parabola. Here are 5 possible coordinates on this curve:

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Answer:

4.4

Step-by-step explanation:

I think

Answer: 200/7

Step-by-step explanation:

This creates 3 similar right triangle

you would put similar parts  on top and the similar parts on bottom of proportions.

ex.

[tex]\frac{hypotenuse}{short leg} = \frac{hypotenuse}{short leg}[/tex]

in your problem they gave the short legs and long legs of right triangel

The line that they share in middle of the triangle is the long leg for the triangle on right and it is also the short leg for triangle on left.

[tex]\frac{long leg}{short leg} =\frac{long leg}{short leg}[/tex]

[tex]\frac{x}{20} = \frac{20}{14}[/tex]

x=(400)/14 = 200/7

You could also make your proportion where

parts of 1 triangle = equivalent parts of the other

ex.

[tex]\frac{long leg from big triangle}{long leg from small triangle} = \frac{short leg big triangle}{short leg from small triangle}[/tex]

Answer:

9 x w + 6 = 8

Step-by-step explanation:

Answer:

The answer is 54 cm!

Step-by-step explanation:

You have to add all the sides together, once you do that you will get a sum of 54 cm. So 54 cm is the answer!

If you have any questions please ask me! :)

Answer: The perimeter is 132

Answer:

The answer is D!

Step-by-step explanation:

Firs you have to do 10 divided into 2, the answer is 5. Now you have to do 5 x 5 that will get you 25. So D is the answer! (25 feet)

If you have any question ask me please! :)

Answer:

The answer is 4 1/3

Step-by-step explanation:

If you have any questions ask me please!

4 1/3 laps total equaling 3 miles

pls mark as brainliest hope this helps you

Answer:

Answer is in the image below! :)

Step-by-step explanation:

If you have any questions ask me please!

Answer:

x = 19

Step-by-step explanation:

We can see that the angles (2x + 4) and (8x - 14) are supplementary — they add to 180. From this observation, we can form the equation that can be solved for x:

(2x + 4) + (8x - 14) = 180

↓ combining like terms

10x - 10 = 180

↓ adding 10 to both sides

10x = 190

↓ dividing both sides by 10

x = 19

Answer:A spinner wheel or a 12 sided die

Step-by-step explanation: It’ll be randomized so hopefully no one gets angry.

Answer:

Step-by-step explanation:lower quartile is 1.

The median is 4.

and the upper quartile is 7

Answer:

I believe its 129.

Step-by-step explanation:

I used SA = bh+(b1+b2+b3)l to solve. Good Luck

Answer:

About 59.66 inch

Step-by-step explanation:

To find the circumference you first have to find the diameter which is the double the radius. Since 9.5 is the radius of this circle, the diameter is, 9.5x2=19.

With the diameter of 19, you multiply the 19 with pie which is approximately 3.14. The answer is 19x3.14=59.66

Answer: IQR= 18

Step-by-step explanation:

First, you need to put the numbers in order from least to greatest, which they already are.

23, 58, 58, 64, 76,87

then, you draw an imaginary line down the middle of the numbers (between 58 and 64), and then you find the number in the middle of these. The Q1 is 58, and the Q3 is 76. In order to find the Interquartile range (IQR), you simply subtract the two.

76-58= 18

And you have your answer

Hope this helps!

Answer:

44

Step-by-step explanation:

First, we need to find the median in the data set.

It's between 58 and 64. To find the median, we add those two numbers and then divide by 2.

58 + 64 = 122

122 ÷ 2 = 61 (Mark this point in between the numbers on the data set)

            median = 61

23, 58, 58, | 64, 76, 87

Now that we have the median, we have to find the upper quartile and the lower quartile in order to find the interquartile range.

Lets find upper quartile first. In order to do that, add up all the numbers to the right of the data set from the median point, then divide by 2.

64 + 76 + 87 = 227

227 ÷ 2 = 113.5

The same goes for the lower quartile (to the left).

23 + 58 + 58 = 139

139 ÷ 2 = 69.5

Lastly, to find the interquartile range, simply subtract the lower quartile from the upper quartile.

113.5 - 69.5 = 44

Therefore interquartile range = 44.

sorry if Im wrong

Answer:

The Correct answer is the

Bottom plot

Answer:

The top plot

Step-by-step explanation:

Box and Whisker Plot

box plot

Description

A Box and Whisker Plot (or Box Plot) is a convenient way of visually displaying the data distribution through their quartiles.

The lines extending parallel from the boxes are known as the “whiskers”, which are used to indicate variability outside the upper and lower quartiles. Outliers are sometimes plotted as individual dots that are in-line with whiskers. Box Plots can be drawn either vertically or horizontally.

Although Box Plots may seem primitive in comparison to a Histogram or Density Plot, they have the advantage of taking up less space, which is useful when comparing distributions between many groups or datasets.

Here are the types of observations one can make from viewing a Box Plot:

What the key values are, such as: the average, median, 25th percentile, etc.

If there are any outliers and what their values are.

If the data is symmetrical or not.

How tightly is the data grouped.

If the data is skewed and if so, in what direction.

Two of the most commonly used variation of Box Plot are: variable-width Box Plots and notched Box Plots.

Answer:

The answer is A. Randy stopped twice on the way to school

Hope that helps!

Step-by-step explanation:

Answer:

36.85 ft

Step-by-step explanation:

3 feet on either end + 6 feet on either side + circumference of the circle

3 + 3 + 6 + 6 + circumference of the circle

18 + circumference of the circle

You can find the circle's diameter by subtracting 6 from 12.  You get 6.  You can find the radius by dividing the diameter by 2.  You get 3.

The formula for circumference is 2·π·Radius

2 · π · 3 = 6 · π = 6 · 3.14 ≈ 36.85

Answer:

c is the answer!

Step-by-step explanation:

You have to first do the problem. If the tax is 2 and the total is 42, you would do 42 - 2. Then you have to divide it into 5. (the amount of items) You will get 8. Now you have to find what question is wrong. So if you would compare the way of figuring it out to the answers you would see that 5 is not how much each product cost. So c is the answer!

If you have any questions ask me please! :)

Answer:

it's A/ m= -2.

Im horrible at this stuff but I tried for you

Answer:

55.1 ft

Step-by-step explanation:

4 + 4 + circumference of the circle

Formula for circumference of a circle is 2 · π · radius, but can also be written as π · diameter

4 + 4 + (15 · π)

4 + 4 + (15 · 3.14)

4 + 4 + 47.1

8 + 47.1

55.1

Answer:

answer below ⬇️

Step-by-step explanation:

Answer:  1: top(10, 6) bottom(9,6)

Step-by-step explanation:

If the side lengths of the new phone are proportional to the old phone, then we can set up a proportion:

1.4/4.2 = 1.75/x

Solving for x, we get:

x = 5.25 inches

So the width of the new phone will be 5.25 inches.

Answer:

The answer is 5.25 inches!

Step-by-step explanation:

If you have any questions please ask me! :)

Answer:

you need to add it first and then take away and you get your answer

Answer: A: 1,767.1 Cubic centimeters

Step-by-step explanation:  

The equation for the volume of a sphere is:  [tex]V= \frac{4}{3} \pi r^{3}[/tex]

I simply plugged in the radius (r). Here is what my equation looks like now: [tex]V= \frac{4}{3} \pi 7.5^{3}[/tex]

I simply plugged this into my calculator, to get my answer of [tex]1,767.1cm^{3}[/tex]

Hope this helps!

A: 1,767.1 Cubic centimeters

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