100
10,uus
11. a ball is thrown upward at a velocity of 15 meters per second from a height that is 20
meters above the ground. the height h (in meters) of the ball at time t in seconds) after it
is thrown can be found by h(t) = -5t^2 + 15t + 20. find the time when the ball is again 20
meters above the ground.
a
1 second
(b
2 seconds
c
3 seconds
d
4 seconds

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

If log(a) = 1.2 and log(b)= 5.6, what is log(a/b)? a. 4.4b. 6.8c. not enough informationd. -4.4

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