10010,UUS
11. A ball is thrown upward at a velocity of 15 meters per second from a height that is 20
meters above the ground. The height h (in meters) of the ball at time t in seconds) after it
is thrown can be found by h(t) = -5t^2 + 15t + 20. Find the time when the ball is again 20
meters above the ground.
A
1 second
(B
2 seconds
C
3 seconds
D
4 seconds

Answers

Answer 1

Answer: The correct answer is B

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The graph shows the relationship between the distance a truck can travel and the amount of gasoline used. What is the unit rate for the situation?

A. 1/7
B. 7 mpg
C. 35 mpg
D. 175 mpg

Answers

The unit rate for the situation that shows the relationship between the distance a truck can travel and the amount of gasoline used is 7 miles per gallon

The graph given is a straight line.

The unit rate in the situation will be gotten by finding the slope of the line graph.

The slope of the line is expressed using the formula:

$m=(y_2-y_1)/(x_2-x_1)\n$

Using the coordinate points (1, 7) and (5, 35) on the line

$m=(35-7)/(5-1)\nm=(28)/(4)\nm=7mi/gallon$

This shows that the unit rate for the situation is 7 miles per gallon

Learn more here: brainly.com/question/12922257

we know that

A unit rate is a ratio between two different units with a denominator of one

in this problem, the unit rate is equal to the slope of the line

Let

$A (1,7)\nB( 5,35)$

the slope is equal to

$m=((y2-y1))/((x2-x1))$

Substitute the values

$m=((35-7))/((5-1))$

$m=((28))/((4))$

$m=7 (miles)/(galons)$

the unit rate means that the truck can travel $7$ miles per one gallon of gasoline used

therefore

the answer is

The unit rate is equal to the option

B. 7 mpg

What is the best estimate for the sum if 3/8 and 1/12

Answers

3/8= 0.375
+1/2= 0.50
------------------
=0.875

What is the approximate volume of a cylinder with a diameter of 12 meters and a height of 7 meters? Use 3.14 for pi. A.
131.9 m3

B.
263.8 m3

C.
791.3 m3

D.
3165.12 m3

Answers

$The\ volume\ of\ the\ cylinder:V=\pi r^2 H\n(r-a\ radius);\ (H-a\ height)\n---------------------\ndiameter:d=2r\to\ 2r=12\ m\ therefore\ r=6\ m\n\nsubtitute\n\nV=\pi\cdot6^2\cdot7=\pi\cdot36\cdot7=252\pi\approx252\cdot3.14=791.28\approx\boxed{791.3\ (m^3)}\n\nAnswer:\boxed{C}$

If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up (+1) ⇒ 791.28≈791.3

What's the equation of the line perpendicular to y=3x-2 and passes through the point (-9,5)? I'm having a brain freeze and can't remember how to do this... Thanks!