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3 years ago

5

Solve 15 = 0.5 n check the souution

1 answer:

denis23 [38]3 years ago

8 0

N = 30.

0.5(30) = 15

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Ostrovityanka [42]

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Step-by-step explanation:

# 5

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3 years ago

A video game was $34. This weekend the game will be marked 12 percent off. How much is the game this weekend?

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3 years ago

What is the value of x?<br><br> x + 13 = 59

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Step-by-step explanation:

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Alex17521 [72]

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4 years ago

Solve the right triangle given that mZA= 30°, mZC = 90°, anda = 15. Round your result to one decimal place.

Genrish500 [490]

Answer:

$\angle B = 60^o$

$b =17.3$

$c = 20$

Step-by-step explanation:

Given

$a= 15$

$\angle A = 30^o$

$\angle C = 90^o$

<em>See attachment for illustration</em>

Required

Solve the triangle

First, we calculate the measure of B

$\angle A + \angle B + \angle C = 180^o$ --- angles in a triangle

$30^o + \angle B + 90^o = 180^o$

Collect like terms

$\angle B = 180^o-90^o-30^o$

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Solve for (c) using sine function

$\sin(30) = \frac{a}{c}$

Make c the subject

$c = \frac{a}{\sin(30)}$

Substitute known values

$c = \frac{10}{0.5}$

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Solve for (b) using Pythagoras

$c^2 = a^2 + b^2$

This gives:

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$400 = 100 + b^2$

Collect like terms

$b^2 =400 - 100$

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Take square roots

$b =17.3$

8 0

3 years ago