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Levart [38]
3 years ago
15

Solve. 14/n+7=10/n-4 N=5.25 N=3.5 N=31.5 N=30

Mathematics
1 answer:
Ilya [14]3 years ago
5 0

Answer:

n=31.5

Step-by-step explanation:

The given question is:

\frac{14}{n+7}=\frac{10}{n-4}

Cross multiply to get:

14(n-4)=10(n+7)

Expand the parenthesis:

14n-56=10n+70

Group similar terms:

14n-10n=70+56

Combine the like terms

4n=126

Divide both sides by 4

n=\frac{126}{4}

n=31.5

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dolphi86 [110]

Answer:

Y = 32.7°

Step-by-step explanation:

We will apply the Cosine law in the given triangle XYZ,

x = 90 ft

y = 55 ft

z = 50 ft

We have to find the measure of angle Y.

y² = x² + z² - 2xzCosY

(55)² = (90)² + (50)² - 2(90)(50)cosY

3025 = 8100 + 2500 - 9000.cosY

9000.cosY = 10600 - 3025

cosY = \frac{7575}{9000}

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Y = \text{cos}^{-1}(0.84167)

Y = 32.68 ≈ 32.7°

Therefore, measure of angle Y = 32.7°

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3 years ago
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max2010maxim [7]
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8 0
3 years ago
15 one half subtracted by 3 wholes and seventh eights
FromTheMoon [43]
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6 0
3 years ago
Read 2 more answers
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Explanation:

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