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3 years ago

Two angles lie along a straight line. If m∠A is five times the sum of m∠B plus 7.2°, what is m∠B?

Mathematics

2 answers:

soldier1979 [14.2K]3 years ago

8 0

Answer: 28.8°

Step-by-step explanation:

∠A = 5(∠B) + 7.2°

∠B = ∠B

Since they are on a straight line, they form a linear pair (sum = 180°)

∠A + ∠B = 180°

Use Substitution:

5(∠B) + 7.2° + ∠B = 180°

Add like terms:

6(∠B) + 7.2° = 180°

Subtract 7.2° from both sides:

6(∠B) = 172.8°

Divide both sides by 6:

∠B = 28.8°

Anvisha [2.4K]3 years ago

6 0

Answer

The answer is 28.8

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Step-by-step explanation:

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3 years ago

I Only Need #9 Not 10

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Answer:

Step-by-step explanation:

Remember the last question? to find circumference you have to multiply the diameter by 3.14? well same here except you divide the circumference by 3.14 to get the diameter. so divide 18.84 ÷ 3.14 = 6

~R3V0

$d= \frac{C}{\pi }$