ball is thrown 40 meters above ground. the height of the ball from the ground level after t seconds is defined by using the function h(t)=40t-5t^2. how long will the ball take to hit the ground

The ball will take 8.90 seconds to hit the ground.

Step-by-step explanation:

The height of a ball after t seconds is given by:

Determine how long will the ball take to hit ground level. Since the gound is 40 meters below the throwing point:

Rearranging:

Simplifying by 5:

Solving the quadratic equation with the formula:

With a=1, b=-8, c=-8

There are two solutions:

t=8.90 sec, t=-0.90 sec

Due to the nature of the problem, t cannot be negative, thus:

The ball will take 8.90 seconds to hit the ground.

-50/3 is the final answer! : )

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

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