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VARVARA [1.3K]
2 years ago
9

________Factor_________-25d -10

Mathematics
1 answer:
Bad White [126]2 years ago
7 0

Answer:

<u><em>−5(5d+2)</em></u>

Step-by-step explanation:

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In triangle △ABC, ∠ABC=90°,
makvit [3.9K]
<h3>Answer: As a fraction, HC is 21/4 units long</h3><h3>In decimal form, HC is 5.25 units long.</h3>

==============================================

Work Shown:

Let x = HC and y = BH

AH = 12-x since AH = 12-HC and x = HC

---------------

See the attached drawing below. The altitude BH forms three similar triangles which makes the proportion below possible

HC/BH = BH/AH

x/y = y/(12-x) ... substitution

x(12-x) = y^2 ... cross multiply

y^2 = -x^2+12x

note how I isolated y^2 instead of y. We will use this equation later.

---------------

Focus on triangle AHB. Use the pythagorean theorem

(BH)^2 + (AH)^2 = (AB)^2

(y)^2 + (12-x)^2 = (9)^2

y^2 + 144-24x+x^2 = 81

-x^2+12x + 144-24x+x^2 = 81 ... replace y^2 with -x^2+12x

-x^2+12x + 144-24x+x^2-81 = 0

-12x + 63 = 0

-12x = -63

x = -63/(-12)

x = 5.25 <<-- answer in decimal form

x = 5 + 0.25

x = 5 + 1/4

x = 20/4 + 1/4

x = 21/4 <<-- answer as a fraction

3 0
2 years ago
Does anyone know these 2?
djverab [1.8K]

Answer:

  1. x=21
  2. <1=120 these are the answers
8 0
2 years ago
Read 2 more answers
Pls help me need asap!!! giving brainliest​
ozzi

Answer:

I think it's false and the length is 15

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1 year ago
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Find the slope of a secant line with the intervals of [0,1]
Leona [35]

Answer:

m = N/A

Step-by-step explanation:

Can you give me a curve or something?

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Write a numerical expression for the difference of 100 and x
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Answer:

100-x

Step-by-step explanation:

Hope this helps:)

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