Answer:
See below in bold.
Step-by-step explanation:
a) h = -3t^2 + 15t = 0
-3t(t - 5) = 0
t = 0, 5 are the zeroes of the relation.
b) The ball hits the ground when h = 0 so it is after 5 seconds.
c) The path of the ball is a parabola which opens downwards so the maximum height is when x = 5/2 = at 2.5 seconds.
d) this maximum height is -3(2.5)^2 + 15(2.5) = 18.75 meters.
Answer:
3.47
Step-by-step explanation:
the hundreth is the second place after the decimal
always round up on number 5+
Answer:
5.66 miles per liter.
Step-by-step explanation:

4 2/5 = 22/5
3 1/7 = 22/7
22/5 x 7/22 = 154/110 = 7/5
The answer is 1 2/5
Distance Formula
d = sqrt((x1-x2)^2 + (y1-y2)^2)
d = sqrt((0-8)^2 + (0-3)^2)
d = sqrt((-8)^2 + (-3)^2)
d = sqrt(64+9)
d = sqrt(73)
You are correct. Nice work.