Rosa throws a ball. The equation d = −t2 + 4t + 5 represents the path taken by Rosa's ball where d is the height of the ball (in feet) after t seconds. For this throw, how many times was Rosa's ball 8 feet in the air?

understand that i don't know the answers

will someone answer his question

hdjd

step-by-step explanation:

answer: 5100 just subtract

step-by-step explanation:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.