On the lines below, explain how you know whether each graph represents a proportional relationship or not.

x+y=90

x=30-y=x

step-by-step explanation:

if you understand you will get the answer

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation:

answer: i don't understand it

step-by-step explanation: sorry

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.