Answer:
Yes, they do
Step-by-step explanation:
Yes, y = 3x represents direct variation. The fact that the line (graph) of y = 3x goes through the origin (0,0) reinforces this statement.
Answer:
40 square centimeters
Step-by-step explanation:
so if the density is 9 grams per square centimeter (for every 9 grams, there is 1 square centimeter):
360/9=40
40 cm squared
Answer:
2x + 3
Step-by-step explanation:
6x + 9 = 3*2 *x + 3*3 = 3*(2x + 3)

Yes she is right. It works because the sum of the individual digits of the difference is divisible by nine.
Answer:
48 inches is the answer!
Step-by-step explanation:
It's easy!
Since an octagon has 8 sides, we multiply it by 6:
8 × 6 = 48
Thus making 48 inches as your answer!
Hope this helps!
Hugs,
Josh