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1 year ago

10

1. To the nearest tenth of a foot, how tall is a building 100 feet away (d = 100) if the top of the building

1 answer:

Alisiya [41]1 year ago

5 0

Answer: imagine not knowing the answer

Step-by-step explanation:

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Is this expression a perfect square trinomial?

Katyanochek1 [597]

Yes it is (10x-y)^2 is the answer of it

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3 years ago

Juan builds a square dog pen that has an area of 100 square feet. He then builds a second pen that has an area of 49 square feet

EleoNora [17]

Answer:

51%

Step-by-step explanation:

Simple. 100-49=51

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3 years ago

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Solve the system of equations. -5x+2y=9. y=7x

il63 [147K]

$- 5x + 2y = 9 \\ y = 7x \\ \\ - 5x + 2 \times 7x = 9 \\ - 5x + 14x = 9 \\ 9x = 9 \\ x = 1 \\ \\ y = 7 \times 1 = 7 \\$

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2 years ago

Write a subtraction fact with the same difference as 16 -7

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14-5=9, 12-3=9, 15-6=9

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3 years ago

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A line that is perpendicular to y=-2/7x+9y and that passes through the point (4, -6)

IrinaK [193]

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Find Slope :
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y = -2/7x + 9
Slope = -2/7
Perpendicular slope= 7/2

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Find y - intercept :
--------------------------------------------------
y = mx + b
y = 7/2 x + b
At (4, -6)
-6 = 7/2 (4) + b
-6 = 14 + b
b = -6 - 14
b = -20

--------------------------------------------------
Form equation :
--------------------------------------------------
y = mx + b
y = 7/2 x - 20
2y = 7x - 40

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Answer: 2y = 7x - 40
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8 0

3 years ago