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OlgaM077 [116]
3 years ago
11

What is the length of AC?

Mathematics
1 answer:
EastWind [94]3 years ago
8 0

Answer:

Step-by-step explanation:

the triangles are proportional

9/81=1/3

140-x/x=1/3

3(140-x)=x

420-3x=x

4x=420

x=420/4 = 105

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3 years ago
How to factor 1-49c^2
Dima020 [189]
Ok so this is a difference of 2 perfect squares
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5 0
3 years ago
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gizmo_the_mogwai [7]

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Step-by-step explanation:

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5 0
3 years ago
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Lerok [7]

Answer:

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4 0
2 years ago
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Flauer [41]

Answer:

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