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Artist 52 [7]
3 years ago
10

Hurryyyyyy!!! which expression is equivalent to 7(1+3)? a.1+21b.7+21c 7+3d.7+4

Mathematics
1 answer:
n200080 [17]3 years ago
4 0

Answer:

b. 7+21

Step-by-step explanation:

If you do 1+3=4 and then 4 times 7 that equals 28. When you do 7+21 that equals 28 too. So b is the answer

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Answer:

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Step-by-step explanation:

Right triangle obey the Pythagorean theorem. Thus, we choose the two smaller numbers (being the cathetus) and if after applying the P. Theorem we get the biggest of each option  (the hypotenuse) that means that those numbers could be the sides of a right triangle.

The Pythagorean theorem states that: a^2+b^2=c^2

Thus:

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Option B:

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Option C:

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Option D:

\sqrt{4^2+13^2} = \sqrt{185} → \sqrt{185} ≠ 16 NO

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