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anastassius [24]
3 years ago
9

What is the solution to the equation 9k = 40.5? k= 4 k= 4.5 k= 5

Mathematics
2 answers:
timofeeve [1]3 years ago
4 0

Answer: The answer k=4.5

Scilla [17]3 years ago
3 0

Answer:

k=4.5

Step-by-step explanation:

40.5/9

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For the orchestra concert, the orchestra director has asked that everyone wear either black pants or a black skirt. Five times a
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3 years ago
If a = 7 and b = 11, what is the measure of ∠B? (round to the nearest tenth of a degree) A) 32.5° B) 39.2° C) 50.5° D) 57.5°
Ilia_Sergeevich [38]

Answer:

D) 57.5°

Step-by-step explanation:

As the question is not complete. So, let's suppose it is a right angle triangle then, we can apply Pythagoras theorem to calculate the hypotenuse or the third side.

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c^{2} = 49 + 121

c^{2} = 170

c = \sqrt{170}

To calculate the unknown angle B, we can use law of sine.

Law of sine = \frac{a}{sinA} = \frac{b}{sinB} = \frac{c}{sinC}

So,

\frac{c}{sinC} = \frac{b}{sinB}

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Sin90 = 1

sinB = \frac{11}{\sqrt{170} }

B = sin^{-1} (\frac{11}{\sqrt{170} })

B = 57.5°

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3 years ago
8% of $340 is what amount
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