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Leya [2.2K]
4 years ago
12

Check my answer please?

Mathematics
2 answers:
yaroslaw [1]4 years ago
4 0
You are right Elrd23 .......................

Rus_ich [418]4 years ago
4 0

Answer:

The correct option is A.

Step-by-step explanation:

Given information: In triangle XYZ, XY = 15, YZ = 21, and XZ = 27.

It means z=15, x=21, y=27.

Using Law of Cosine.

\cos Z=\frac{x^2+y^2-z^2}{2xy}

\cos Z=\frac{\left(21\right)^2+\left(27\right)^2-\left(15\right)^2}{2\left(21\right)\left(27\right)}

\cos Z=0.833

Z=\cos^{-1}(0.833)

Z=33.56^{\circ}

Z\approx 34^{\circ}

The measure of angle Z is approx 34 degree. Therefore option A is correct.

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5 0
4 years ago
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BlackZzzverrR [31]
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6 0
4 years ago
Ln(x + 1) − ln(2) = 1
KonstantinChe [14]

Answer:

The answer to your question is: x = 4.44

Step-by-step explanation:

Data

                                          ln(x + 1) − ln(2) = 1

                                          In (x + 1)/2 = 1

                                          (x + 1) / 2 = e¹      

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4 0
3 years ago
Read 2 more answers
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