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Suppose y varies directly with x. When X is 2, y is 10. What is y when x is 4?

Suppose y varies directly with x. When X is 2, y is 10. What is y when x is 4?
asked 144k views
12 votes
Suppose y varies directly with x. When
X is 2, y is 10. What is y when x is 4?

asked
User Shmit
by
7.7k points

1 Answer

4 votes
x:y

2/10 = 4/x

Cross multiply

2x X= 10x4

2x = 40

Eliminate

2x/2 = 40/2

x = 20
answered
User StuartM
by
7.7k points
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