The equation h(t)=−16t2+120t+65 gives the height of a firework, in feet, t seconds after it is launched from a platform.

what is the height of the platform?

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ft

The  height of the platform is 65 ft

Step-by-step explanation:

Given :  The equation gives the height of a firework, in feet, t seconds after it is launched from a platform.

We have to find the height of the platform.

Since the firework is launched from the platform so the initial height of firework will give the height of the platform.

So, the firework is at platform when t = 0 in the given equation    

At t = 0

Simplify , we have,

Thus, The  height of the platform is 65 ft

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.

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step-by-step explanation:

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