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18 votes
I need help on this please

I need help on this please-example-1
User Jels Boulangier
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1 Answer

13 votes
13 votes

Answer:

Explanation:

x and x are both equal because the two angles opposite them are equal (both angles are 45 degrees).

In addition, the third angle is 90 degrees. You can use the Pythagorean Theorem.

x^2 +x^2 = 12^2

2x^2 = 144 Divide by 2

x^2 = 144/2

x^2 = 72 Factor 72 using prime factors.

x^2= 2*2*2 * 3*3

Every pair of equal factors contributes 1 factor to the question mark outside the root sign. The other factor is thrown away.

sqrt(x^2) = 2 * 3 * sqrt 2 a single two is left under the root sigen

x =6 sqrt(2)

User Cduck
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