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nirvana33 [79]
3 years ago
5

the value of y varies directly with x, and when x = 1/4 , y = 25. What is the value of y when x is 2 1/3 need help ASAP

Mathematics
1 answer:
Grace [21]3 years ago
3 0

Answer:

y=233\frac{1}{3}

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

In this problem we have

For x=1/4, y=25

Find the value of k (constant of proportionality)

y/x=k -----> k=25/(1/4)=100

The linear equation is

y=100x

Find the value of y when the value of x=2\frac{1}{3}

substitute the value of x in the equation but first convert to an improper fraction

x=2\frac{1}{3}=\frac{2*3+1}{3}=\frac{7}{3}

y=100(\frac{7}{3})=\frac{700}{3}

convert the result in mixed number

\frac{700}{3}=\frac{699}{3}+\frac{1}{3}=233\frac{1}{3}

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