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nika2105 [10]
3 years ago
12

If we know that u varies inversely as x and y =8 when x=15, what is y when x=10? What is the constant of variation?

Mathematics
1 answer:
Anni [7]3 years ago
4 0
The appropriate math model would be y = k/x.

Unsure of why you are using " u " here.

If y = 8 when x = 15, then 8 = k/15, and k = 120.  This is the const. of var.

Then y = 120/x.  If x = 10, y = 120/10 = 12.
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Answer:

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Step-by-step explanation:

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3 years ago
Write the equation of a line that is perpendicular to x=3x=3x, equals, 3 and that passes through the point (0,-4)(0,−4)left pare
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Step-by-step explanation:

Slope of two lines that are perpendicular to each other is 1.

If one line is y=3x, then its slope = 3   [by comparing to the linear equation y= mx+c, here m=3]

Let n be the slope of the required line, then

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Equation of line with slope n and passers through (a,b) is

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Equation of line with slope n= \dfrac{-1}{3} and passes through point ( 0,-4) :

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3 years ago
How do you solve for LMN? I keep getting 15
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Answer:

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