3 years ago

Find the measure of each angle

1 answer:

7 0

5x+4x+3x=180

12x=180

x=30

3(15) = 45 {angle J}

4(15) = 60 {angle H}

5(15) = 75 {angle G}

Double check that the sum of all angles is 180

45+60+75=180

180=180

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Please help. Sine and Cosine rules

kodGreya [7K]

Answer:

a=41.8 BC=2.8

Step-by-step explanation:

sin30/6=sinx/8

8*sin30=6sinx

4=6sinx

sin^-1(4/6)

angle a

cosine rule

bc^2=3^2 +5^2-2(3)(5)*cos30

BC^2= $\sqrt8.019237886\\$

BC=2.83

2.8

3 0

3 years ago

An art gallery sells paintings at 0.35 per square inch. if a painting is 2 feet 3 inches by 3 feet 5 inches. how much would the

Natalka [10]

Hello!

ANSWER

The painting would cost $387.45.

____________________________________________________________

EXPLANATION

2' 3" = 27"

3' 5" = 41"

Multiply the length by the width (in inches) of the painting.

27 * 41 = 1107

We now know that the area of the painting is 1107 $in.^{2}$ Next, multiply the cost per square inch (0.35) by the total amount of square inches (1107).