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3 years ago

What value of n makes this equation true?

Mathematics

2 answers:

anastassius [24]3 years ago

4 0

Answer:

B). n = 1.40

Step-by-step explanation:

0.7n + 0.8n = 2.1

(0.7n + 0.8n) = 2.1

1.5n = 2.1

/1.5 /1.5

n = 1.40

hope this helped!

Agata [3.3K]3 years ago

3 0

0.7n+0.8n=2.1

1.5n=2.1

n=1.4

Therefore, the answer is B.

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4 years ago

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3 years ago

Find 0,8,3 round the nearest degree

MArishka [77]

The measure of $\theta$ is 68 degrees

<h3>How to solve the angle?</h3>

The complete question is in the attached image

The value of $\theta$ is calculate using the following cosine function

$\cos(\theta) = \frac 38$

Evaluate the quotient'

$\cos(\theta) = 0.375$

Take the arc cos of both sides

$\theta = \cos^{-1}(0.375)$

Evaluate the arc cos

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Approximate to the nearest degree

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