Question #b787b

1 Answer
Nov 16, 2017

For the first question, the answer is "0.28 cm". This would be "2.8 mm".

Explanation:

For this question, you can use a proportion to figure out your answer. So, you know that

"28 cm = 100 years"

("28 cm"/x) = ("100 yr"/"1 yr")

Here x is the cm grown.

So, to solve this, you can cross multiply which would end up with,

"28 cm" xx "1 yr" = "100 yr" xx x

Divide by "100 yr" and you will end up with

"28 cm"/100 = "0.28 cm"

To convert this to millimeters, you multiply the 0.28 cm by 10. This is the conversion of centimeters to millimeters. So the answer would be "2.8 mm".

Hope this helped.