Question

Identify all true statements

15/27=2x/11 this is a proportion

gallons and liters are both units of capacity

pounds and meters are both units of weight

a rational expression is defined as a polynomial times a polynomial

A/B*C/D=AC/BD

A/C-B/C=A-B/C

centimeters, meters, and kilometers are all units of length

meters, liters and grams are all metric system units

7/11=(x/20)+5 this is a proportion

Answer 1

a rational expression is defined as a polynomial times a polynomial
pounds and meters are both units of weight
these two are false

Answer 2

I believe the last one is also false

Answer 3

These are the ones that I think are correct but I'm not sure about

Gallons and liters are both units of capacity

one way to solve a proportion is to cross multiply

A/C-B/C=A-B/C

centimeters, meters, kilometers are all units of length

meters, liters, and grams are all metric system units