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jok3333 [9.3K]
4 years ago
8

If y varies inversely as x and y is 6 when x is 11, what is x when y is 13.2? a. 2.73 b. 8.8 c. 0.37 d. 5

Mathematics
2 answers:
malfutka [58]4 years ago
5 0
Y = k/x is the inverse equation.
6 = k/11
Solving for k, multiply by 11 on both sides.
66 = k
y = 66/x

13.2 = 66/x
x = 5
iren [92.7K]4 years ago
5 0

Answer:

The answer is the option D

x=5

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form y*x=k or y=k/x

in this problem we have

For x=11, y=6

Find the value of the constant k

y*x=k------> k=6*11=66

The equation is equal to

y=k/x------> y=66/x

For y=13.2

Substitute the value of y and find the value of x

x=66/y ------> x=66/13.2=5

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