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Degger [83]
3 years ago
15

Jake is the kicker on the football team and has an amazing kick during the game. The path of the football can be measured by the

function h = -0.625d(d - 56), where h represents the height of the football and d represents the horizontal distance from the player. How far away from Jake is the ball when it finally hits the ground?
A) 0

B) 28

C) 56

D) 280
Mathematics
1 answer:
konstantin123 [22]3 years ago
7 0
<h2>Option C is the correct answer.</h2>

Step-by-step explanation:

The path of the football can be measured by the function h = -0.625d(d - 56)

When the football lands the height of ball is zero.

That is h = 0

Substituting

           h = -0.625d(d - 56)

           0 = -0.625d(d - 56)

           d = 0 units  or d = 56 units

d = 0  units is initial position, which is not acceptable.

So when the ball hits the ground it is 56 units far away.

Option C is the correct answer.      

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8 0
3 years ago
Read 2 more answers
If a ball is thrown into the air with a velocity of 48 ft/s, its height in feet t seconds later is given by y = 48t − 16t2. Find
dimaraw [331]
The formula for average velocity between two times t1 and t2 of the position function f(x) is (f(t2)-f(t1)) / (t2-t1)
Plugging the values in for the first time period we get (f(2.5)-f(2)) / (2.5-2)
=> (f(2.5)-f(2)) / 0.5
f(2) will be the same for all 4 time periods and is
48(2)-16(2)^2 = 32
Now we plugin the other values
f(2.5) = 48(2.5)-16(2.5)^2 = 20
f(2.1) = 48(2.1)-16(2.1)^2 = 30.25
etc.
f(2.05) = 31.16
f(2.01) = 31.8384
Now plug these values into the formula
(20-32)/0.5 = -24
(30.25-32)/0.1 = -17.5
etc.
= -16.8
= -16.16
Final answer:
2.5s => -24 ft/s
2.1s => -17.5 ft/s
2.05 => -16.8 ft/s
2.01 => -16.16 ft/s
Hope I helped :)
6 0
2 years ago
The perimeter of a right triangle is 24 in. find the dimensions of the triangle if the aide are all whole-number lengths.
Tems11 [23]

it can be 8 on each side or 7 9 and 8 or any 3 numbers you can add together to get 24.

7 0
3 years ago
Which of the following angles is coterminal with -4pi/3?<br><br> -2pi/3<br> -pi/3<br> pi/3<br> 2pi/3
PolarNik [594]
Coterminal angles are angles that end in the same position on a unit circle.

We can find angles that are coterminal to -4pi/3 by adding and subtracting 2pi.

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The answer is 2pi/3
4 0
2 years ago
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weeeeeb [17]

Answer:

a. correlation

b. inverse linear correlation exists If the higher the population of students lead to a decrease in test score,

c. yes

Step-by-step explanation:

a. Correlation is a measure of the amount of association existing between two variables.

b. For linear correlation, if points are plotted on a graph and all the points lie on a straight line, then perfect linear correlation is said to exist. When a straight line having a positive gradient can reasonably be drawn through points on a graph positive or direct linear correlation exists,

Similarly,when a straight line having a negative gradient can reasonably be drawn through points on a graph, negative or inverse linear correlation exists,

The results of this determination give values of r lying between +1 and −1, where +1 indicates perfect direct  Positive linear correlation and −1 indicates perfect inverse correlation or Negative linear correlation and 0 indicates that no correlation exists.

If the higher the population of students lead to a decrease in test score, there will definitely be a negative correlation between class size and test score. i.e low class size result in high test score which consequently lead to high performance.

c. YES

A negative correlation means low class size result in high test score which consequently lead to better performance.

8 0
3 years ago
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