MATHEMATICS MIDDLE SCHOOL

Amie published her first book. She was given $20,000 and an additional $0.15 for each copy that sold. Her earnings,d, in dollars,from the publication of the book are given d=20,009 + 0.15n where n is the number of copies sold. During the first year, Amie earned $22,100 from the publication and the sale of her book. How many copies of her book were sold?

Answers

Answer 1

Answer:

Answer: 139 copies of her book were sold.

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

Earnings (d)

d= 20,009+0.15n

Where "n" is the number of copies sold.

If she earned $22,100, we have to replace the value of d by the number given:

22,100 = 20,009 +0.15 n

Solving for n

22,100-20,009 = 0.15n

2,091=0.15n

2,091/15=n

139.4=n

n≅139 books (rounded)

Feel free to ask for more if needed or if you did not understand something.

Answer 2

Answer: d=20,009 + 0.15n
$22,100 = 20,009 + 0.15n
$2091 = 0.15n
n = 2091/.15 = 13940

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Answers

The equations can be anything as long if it is equal to 20n.
So here are some:
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Answers

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a shape is made with two squares. the total area of the shape is 25 square meters. one of the squares has an area is 9 square meters. what is the area of the others square?

Answers

total area=square1+sqrare2
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The measure of Angle B is 68° what is the measure of it supplementary anglea. 22°
b. 90°
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Answers

"Supplementary angles" means two angles that add up to 180°.

   (Any angle) + (its supplement) = 180° .

   (Angle B) + (its supplement) = 180° .

      (68°) + (its supplement) = 180°

Subtract (68°) from each side: Its supplement = 180° - 68°

      = 112° .

Hi

A = 180º-B
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Using the slope formula for the points (1, 5) and (2, -2), what would the denominator be?-2 - 5
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2 - 1
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Answers

Answer:

2-1

Step-by-step explanation:

Answer:

Step-by-step explanation:

Moving from (1, 5) to (2, -2), x increases by 1 and y decreases by 7. The slope of the line connecting these two points has the slope m = rise / run = -7 / 1, or just -7.

Alternatively, using the slope formula,

5-[-2] 7

m = ------------ = -------- = (-7/1). The denominator would be 1.

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What is the slope of a line parallel to y=(1/2)x+3?