A copy machine make 36 copies per minute. How many copies does it make in 4 minutes and 45 seconds

171

Step-by-step explanation:

Multiply the time by how many copies per minute; 45 seconds is equal to 3/4 of a minute, or 0.75:

4.75 x 36 = 171

171 is your answer

Hope this helps!

171

Step-by-step explanation:

36 x 4 = 144

45/60 = 0.75

0.75 x 36 = 27

144+27=171

c

step-by-step explanation:

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: