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DochEvi [55]
3 years ago
11

Solve for x in the diagram below

Mathematics
1 answer:
andre [41]3 years ago
3 0

Answer:

x= 20

Step-by-step explanation:

The sum of the three angles is 90 degrees

x+2x+x+10 = 90

Combine like terms

4x+10 = 90

Subtract 10

4x+10-10 = 90-10

4x= 80

Divide by 4

4x/4=80/4

x = 20

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Step-by-step explanation:

Formula

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Answer

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Select the correct answer.
Naddik [55]
You use the FOIL method, and how you do this is -

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Multiply the first x by both numbers in the second factor. Which means, you multiply x by x and 8, the two in (x + 8).

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Then combine the two.
x^2 + 8x - 7x - 56

Combine like terms.

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Now with this, you take those two numbers and make the factors =
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Subtract the 8 from both sides.

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