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Wewaii [24]
3 years ago
15

A local bookstore finds that each day approximately 20% of their sales are nonfiction books if they sell 425 books one day how m

any of those books are nonfiction?
Mathematics
1 answer:
VikaD [51]3 years ago
6 0
Steps:
1. Do a proportion
X/425= 20/100
2. Do 425 times 20 which equals 8,500
3. Do 8,500 divided by 100 which equals 85
4. Your answer is: 85
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Find the equation of the circle with center (4,5) which passes through the y-intercept of the line 5x-2y+6=0​
Elena-2011 [213]

Answer:

(x-4)^2 + (y-5)^2 = 20

Step-by-step explanation:

Rearrange the line equation of 5x - 2y + 6 = 0

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The y-intercept of the line equation is 3 as when x=0, y=3.

We know the Circle has the formula (x-4)^2 + (y-5)^2 = ?^2 from the question but with the intercept, we can find the entire equation as the y-intercept is (0,3) so we can substitute it into the equation to find the full equations so:

(0-4)^2 + (3-5)^2 = ?^2

This simplifies to:

(-4)^2 +(-2)^2 = ?^2

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2 years ago
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Step-by-step explanation:

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Answer:

Solving the system of equations:

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Step-by-step explanation:

Plug it in to see if it is right, to make sure of course.  Better to be safe than sorry.

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