0.45 is 1/10 of ... ?

4.5

Step-by-step explanation:

This problem is set up in such a way that you take 1/10 of a number and equate it to 0.45

1/10 of x = 0.45 or

1/10 * x = 0.45 Multiply both sides by 10

1/10 * x * 10 = 0.45 * 10 Combine

x = 4.5

The answer would be o. 45