Practice 5.2
a show your work.
a tennis ball machi
now many tennis balls can
all machine can launch 60 tennis balls in 12 minutes. at this tate.
many tennis balls can it launch in 2 hours?

900

Step-by-step explanation:

first find the rate of tennis balls launched (which is 5) then multiply by 180 (2 hours in minutes) which then gives you 900

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.