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stealth61 [152]
3 years ago
7

Round to the nearest tenth

Mathematics
2 answers:
Alecsey [184]3 years ago
7 0

Answer:

7.0

Step-by-step explanation:

Tangents form right angles, so AOB is a right triangle.

Now using Pythagorean Theorem (A^2 + B^2 = C^2), plug in the values and solve inversely.

5^2 + B^2 = 8.6^2

25 + B^2 = 73.96

B^2 = 48.96

B = squareroot 48.96

B = 6.997 --> 7.0

GuDViN [60]3 years ago
4 0

Answer: r is 7

Step-by-step explanation:

ABO is a right triangle

a^{2} +b^{2} =c^{2} \\5^{2} +b^{2} =8.6^{2} \\25+b^{2} =73.96\\b^{2} =48.96\\b=6.997

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Answer:

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Step-by-step explanation:

To solve this problem we need to factorize 4n^2 + 28n +49 as shown below

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thus, after factorization we see that first option is correct one

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we can validate this by expanding it

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<em>Additional comment</em>

You might generally solve a 2-step linear equation by doing the subtraction first, then the division by the coefficient of the variable. If all of the numbers are a multiple of that coefficient, I like to do the division as soon as I can. That way, the numbers I'm working with are as small as possible, and once I isolate the variable term, I have the answer.

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Step-by-step explanation:

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