Some fireworks are fired vertically into the air from the ground at an initial speed of 80 feet per second. The equation for this object’s height h at time t seconds after launch is

h= -16t^2 + 80t
How long will it take the fireworks to reach the ground?

if i put something wrong your not gonna like it so rather not say nothing.

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct

answer: 100

step-by-step explanation: