 admin # A ball is launched into the sky at 272 feet per second from the roof of a skyscraper 1,344 feet tall. The equation for the ball’s height h at time t seconds is h = -16t2 + 272t + 1344. When will the ball strike the ground?

2 months ago

## Solution 1 Guest #3772
2 months ago

Time taken to reach the ball to the ground is 21 seconds.

Step-by-step explanation:

Given : A ball is launched into the sky at 272 feet per second from the roof of a skyscraper 1,344 feet tall. The equation for the ball’s height h at time t seconds is .

To find : When will the ball strike the ground?

Solution :

The equation for the ball's height 'h' at time 't' is given by, When the ball strike the ground the height of the ball became zero.

Substitute h=0 in the given equation, Taking 16 common, or Solve by middle term split,    Reject t=-4 as time can never be negative.

Therefore, Time taken to reach the ball to the ground is 21 seconds.

## Solution 2 Guest #3773
2 months ago

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### What is an effective rate of interest?

The effective interest rate, also known as the effective annual interest rate, annual equivalent rate, or simply effective rate, is the interest rate on a loan or financial product that is restated from the nominal interest rate and expressed as the equivalent interest rate if compound interest was payable annually in arrears. It is calculated by the formula,

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brainly.com/question/13322646

#SPJ2

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