anonymous
  • anonymous
1. If x+3/3=y+2/2, then x/3 = ____. A. y+1 B. y/3 C. y/2 D. y-1 2.A model is made of a car. The car is 10 feet long and the model is 7 inches long. What is the ratio of the length of the car to the length of the model? A. 10 : 7 B. 7 : 120 C. 120 : 7 D. 7 : 10 3. 4/9=m/54 A. 24 B. 1/24 C. 6 D. 2/3
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
x+3/3=y+2/2 the left side needs to look like x/3 First we want to isolate x on the left side. What should we do?
anonymous
  • anonymous
i dont understand
anonymous
  • anonymous
Do you know how to multiply?

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anonymous
  • anonymous
yes
anonymous
  • anonymous
Multiply both sides by 3
anonymous
  • anonymous
9
anonymous
  • anonymous
lol you don't know how to multiply?
anonymous
  • anonymous
Well let's do an easier one first # 3 4/9=m/54 \[\frac{4}{9}=\frac{m}{54}\]
anonymous
  • anonymous
Multiply both sides by 54 in order to isolate m on the right side. Can you tell me what you get for m?
anonymous
  • anonymous
so 54 *4 and 9
anonymous
  • anonymous
yes \[\frac{54*4}{9}=m\] can you simplify that?
anonymous
  • anonymous
486/9=m
anonymous
  • anonymous
54=m
anonymous
  • anonymous
How did you get 486?
anonymous
  • anonymous
54*4
anonymous
  • anonymous
No that doesn't sound right. Do it again.
anonymous
  • anonymous
216

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