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3 years ago

What is the solution to the system of equations ?

Mathematics

1 answer:

miskamm [114]3 years ago

8 0

The answer to the question

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Pls solve no;3a,b,c the picture will be<br>given thank u <br>use trigonometry u solve it

elena-14-01-66 [18.8K]

Answer/Step-by-step explanation:

3.a. length of AC.

Hypotenuse = AC

Opposite side to 60° = 7

Therefore, $sin(60) = \frac{7}{AC}$

$AC*sin(60) = \frac{7}{AC}*AC$

$AC*sin(60) = 7$

$AC = \frac{7}{sin(60)}$

$AC = 8.1$ (to nearest tenth)

b. Length of BC

Hypotenuse = BC

Opposite side to 50° = 7

Therefore, $sin(50) = \frac{7}{BC}$

$BC*sin(50) = \frac{7}{BC}*AC$

$BC*sin(50) = 7$

$BC = \frac{7}{sin(50)}$

$BC = 9.1$ (to nearest tenth)

c. Length of AB

Use the law of sines to find AB

$\frac{BC}{sin(A)} = \frac{AB}{sin(C}}$

m<C = 180 - (60 + 50) (sum of angles in a triangle) = 70°

m<A = 60°

BC = 9.1

AB = ?

$\frac{9.1}{sin(60)} = \frac{AB}{sin(70)}$

Cross multiply

$9.1*sin(70) = AB*sin(60)$

Divide both sides by sin(60)

$\frac{9.1*sin(70)}{sin(60)} = \frac{AB*sin(60)}{sin(60)}$

$\frac{9.1*sin(70)}{sin(60)} = AB$

$9.9 = AB$ (nearest tenth)

$AB = 9.9$

8 0

3 years ago

Which expression is equivalent to in (-8x + 2) -(6x + 9)

ludmilkaskok [199]

Answer:

Answer c is your correct answer just answered it on edmentum mark me brainliest

Step-by-step explanation:

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3 years ago

Find the m GEOMETRY 9th:)

maksim [4K]

Answer:

∠ WOT = 85

Step-by-step explanation:

To find the measure of ∠WOT

we know that ∠UOV is 180 in the pic

so by letting ∠WOT = x

∠UOT + ∠WOT + ∠WOV = 180

30 + x + 65 = 180

95 + x = 180

x = 180-95

x = 85

so ∠ WOT = 85

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2 years ago

A function f(x) is graphed.

Gennadij [26K]

Um, I think it is.. 9

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3 years ago

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Pls help asap what is the area of this figure

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Answer:

255

Step-by-step explanation:

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3 years ago