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ipn [44]
2 years ago
5

write an equation for direct variation and identify the constant of variation when y varies directly as x. if x=5 when y=12

Mathematics
1 answer:
alina1380 [7]2 years ago
4 0
FORMULA: y=mxSibstitute: 12=m(5)Solve: 12/5=5/5
Answer: 12/5
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const2013 [10]
The difference in gallons per day used is 3.6.

The formula to calculate a z-score is:
z=\frac{X-\mu}{\sigma},

where X is the value used to calculate the score, μ is the mean and σ is the standard deviation.  We have the z-scores so we must work backward:

3=\frac{X-2.2}{1.2}\text{ and }0=\frac{X-2.2}{1.2}

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3\times1.2=(\frac{X-2.2}{1.2})\times1.2\text{ and }0\times1.2=(\frac{X-2.2}{1.2})\times1.2&#10;\\&#10;\\3.6=X-2.2\text{ and }0=X-2.2

Now we will cancel 2.2 from both equations by adding it to both sides:

3.6+2.2=X-2.2+2.2     and       0+2.2=X-2.2+2.2
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The difference in gas used per day would be given by
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3 years ago
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