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grigory [225]
2 years ago
10

5 ( x + y) +3 (2x +y)​

Mathematics
1 answer:
satela [25.4K]2 years ago
7 0

Answer:

11x + 8y

Step-by-step explanation:

(5x + 5y) + 3 ( 3 · 2x + 3y)

(5x + 5y) + (6x + 3y)

5x + 5y + 6x + 3y

5x + 6x + 5y + 3y

11x + 8y

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Answer:

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Step-by-step explanation:

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What is the measure of angel A?
Rudiy27

Answer:

12.68°

Step-by-step explanation:

We know all three sides (18, 80, 82), but we only need two: 18, and 82. Why? What we do here is find the arcsin of the first leg divided by the hypotenuse.

arcsin(18/82)

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0.22131 rad

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12.680128961145°

<em>The directions say the final answer has to be two decimal places. So this becomes 12.68 (0 is less than 5, so round down).</em>

12.68°

Angle A is 12.68°.

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