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PLEASE HELP 5 QUESTIONS PLEASE ILL GIVE BRAINLY IF IT SHOWS
1.
Which one is a proportion?
A. 1/2 = 2/3

B. 3/4 = 12/16

C. 19/15 = 54/85

D.2.5/7=5/12
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2.
Solve the proportion for the missing value of y.
3/12 = y/8
y =_________|
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3.
Solve the proportion for the missing value of w.
5/w = 8/4
w =__________|
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4.
If Mr. Argo went 20 miles on 2.5 gallons of gas, and he wants to know how far he can go on 9 gallons of gas. Which proportion would be helpful to solve the problem?
A.20/9 = 2.5/x

B. 9/2 = 20/x

C. 20/2.5 = x/9

D.9/20 = x/2