Answer:
12
Step-by-step explanation:
Answer:
9x+9
Step-by-step explanation
Combine like terms (6x and 3x, 2 and 7)
Answer: 18.7
Step-by-step explanation:
Find the lengths of AB, BC, and CA
AB =
= 5
≈ 7.1
BC =
= 5
≈ 7.1
CA =
= 2
≈ 4.5
7.1 + 7.1 + 4.5 = 18.7
You multiply fractions simply by multiplying numerators and denominators with each other:

It is proportional because we increase y.