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HELP ME OUT PLEASE!!!!!! The value of y varies directly with x. If x= 3, then y = 18. What is the value of x when y = 84? A) 4 2/3 B) 6 C) 14 D) 9​
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6 votes
6 votes
HELP ME OUT PLEASE!!!!!!

The value of y varies directly with x. If x= 3, then y = 18. What is the value of x when y = 84?

A) 4 2/3
B) 6
C) 14
D) 9​

User Alex Stewart
by
2.9k points

2 Answers

13 votes
13 votes
x=14

The work:
3/18 =x/84 (cross multiply)
18x=252
18x/18=252/18
x=14
HELP ME OUT PLEASE!!!!!! The value of y varies directly with x. If x= 3, then y = 18. What-example-1
User Hooting
by
3.0k points
9 votes
9 votes
The answer is C
Set up a proportion
3/18 = x/84
(3)(84)=252
252/18=14
User Luca Rasconi
by
3.0k points
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