8th grade algebra 1 equations

Algebra
Tutor: None Selected Time limit: 1 Day

The equation h=-16t^2+47t+3 models the height h, in feet, of a ball that Sofia hits after t seconds. How long is the ball in the air?

Mar 3rd, 2015

The equation for speed is:

v = -32 t +47

if we set v=0, I get:

0 = - 32 t +47

next I sove for t and I can write:

t = 47/32

or:

t = 1.469 seconds

so your answer is t = 1.469 seconds

Mar 3rd, 2015

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