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natulia [17]
2 years ago
15

Aiyana reads 147 pages of a book. She completes 70% of the book. How many pages does Aiyana still have left to read?

Mathematics
1 answer:
Alexandra [31]2 years ago
8 0

Answer:

44 pages

Step-by-step explanation:

To calculate 70% of 147, divide 147 by 100 to find the number of pages per 1%, then mulitply by 70 to find 70%

(147 ÷ 100) x 70 = 102.9 = 103 (rounded to the nearest integer)

To calculate how many pages are left, subtract 102.9 from 147:

147 - 103 = 44

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Write an equation of the line through each pair of points in slope-intercept form.
ASHA 777 [7]

Answer:

see below

Step-by-step explanation:

a) (– 3, –2) and (–3, 4)

First you want to find the slope of the line that passes through these points. To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)

Plug in these values:

(4 - (-2) / (-3 - (-3))

Simplify the parentheses.

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Simplify the fraction.

(6) / (0)

= undefined

If your slope is undefined, it is a vertical line. The equation of a vertical line is x = #.

In this case, the x-coordinate for both points is -3.

Therefore, your equation is x = -3.

b) (3, 2) and (–4, –5)

First you want to find the slope of the line that passes through these points. To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)

Plug in these values:

(-5 - 2) / (-4 - 3)

Simplify the parentheses.

= (-7) / (-7)

Simplify the fraction.

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= 1

This is your slope. Plug this value into the standard slope-intercept equation of y = mx + b.

y = 1x + b or y = x + b

To find b, we want to plug in a value that we know is on this line: in this case, I will use the first point (3, 2). Plug in the x and y values into the x and y of the standard equation.

2 = 1(3) + b

To find b, multiply the slope and the input of x(3)

2 = 3 + b

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Plug this into your standard equation.

y = x - 1

This is your equation.

Check this by plugging in the other point you have not checked yet (-4, -5).

y = 1x - 1

-5 = 1(-4) - 1

-5 = -4 - 1

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Your equation is correct.

Hope this helps!

7 0
3 years ago
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frez [133]

Answer:

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The area of the model is 80 square foot

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