Plug in f(t) = 0. We do this because f(t) represents the height and a height of 0 means you're at the ground.
f(t) =-5t^2 + 20t + 60
0 = -5t^2 + 20t + 60
-5t^2 + 20t + 60 = 0
Now solve for t using the quadratic formula
Turn 8 into 2 4s 64-4=60 then do 60-4=56
Answer:
A. 17x B. -18b2+11b
Step-by-step explanation:
10x + 7x = 17x
7-7=0
answer is 17x
-8b2-10b2= -18b2
8b+3b=11b
6-6=0
answer is -18b2+11b
Answer:
The slope of the line is -7/8
When the point (7, –4) is used, the point-slope form of the line is
y+4=(-7/8)(x-7)
The slope-intercept form of the line is y=(-7/8)x+(17/8)
Step-by-step explanation:
Step-by-step explanation:
