What is the equation for five times a number is 45?

5 × Y = 45  y stands for "a number"

Step-by-step explanation:

not sure what your asking so ill solve it too

45/5=9

when the equation is multiplication you use division also vice versa for division

5×9=45

y=9

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.