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san4es73 [151]
3 years ago
14

2.select the correct answer

Mathematics
1 answer:
ra1l [238]3 years ago
7 0

Answer:

Step-by-step explanation:

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In ABC, if the lengths of sides a and c are 8 centimeters and 16 centimeters, respectively, and the measure of C is 35 degrees,
Simora [160]

Answer:

∠ A ≈ 16.67°

Step-by-step explanation:

Using the Sine rule in Δ ABC

\frac{a}{sinA} = \frac{c}{sinC} , substitute values

\frac{8}{sinA} = \frac{16}{sin35} ( cross- multiply )

16 sinA = 8 sin35° ( divide both sides by 16 )

sin A = \frac{8sin35}{16} , thus

∠ A = sin^{-1} ( \frac{8sin35}{16} ) ≈ 16.67° ( to 2 dec. places )

8 0
3 years ago
Help please! I just need to know how to do this step by step...
Alex787 [66]

-8 - 5n = 64 + 3n

    +5n          +5n           add 5n to both sides, 5n's cancel out on the left.

______________

-8 = 64 + 8n

-64 -64                          subtract 64 on both sides, 64's cancel out on the right.

______________

-72 = 8n

___  ___                       divide 8 on both sides, 8's cancel out from the right.

 8      8

n= -9, final answer

7 0
3 years ago
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The exponent indicates how many times the blank is used as a factor
Tamiku [17]
The exponent indicates how many times the number is used as a factor
7 0
3 years ago
If it takes 4 men 6hours to repair a road, how long will it take 7 men to do the job if they work at the same rate.
Crank
Tricky question. This isn't a ratio question even though it seems like one.

First divide 7 by 4.
7 \div 4 = 1.75

With more men, the hours taken to repair a road will be even shorter.

So next divide 6 by 1.75.
6 \div 1.75 = 3.43

Answer : It'll take 3.43 hours to do the job if they work at the same rate.

Hope this helps. - M
4 0
4 years ago
1. Write out the following proportions in words.
son4ous [18]

The ans is B because 3/4=1876 is a proportions

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3 years ago
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