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PolarNik [594]
2 years ago
12

PLEAAASE HELP ILL MARK BRAINLIEST

Mathematics
2 answers:
kicyunya [14]2 years ago
8 0

Answer:

The answer is 69

Step-by-step explanation:

You have to substitute y by 9 and by 3

Jet001 [13]2 years ago
8 0

Answer:

Step-by-step explanation:

Since y is equal to 9 and z is equal to 3, we do 10 x 9 - 7 x 3. 10 times 9 is 90, and 7 times 3 is 21.

Then, we do 90-21. 90-21=69. Therefore, 10y-7z = 69.

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Answer:

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Step-by-step explanation:

The tangent and cotangent are equal when the angles are complementary.

  (3B +35) +(2B -10) = 90

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  B = 13

___

<em>Check</em>

For B=13, the angles are 3B+35 = 39+35 = 74, and 2B-10 = 26-10 = 16. Both are acute angles.

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