3 years ago

Somebody please help me

1 answer:

5 0

Answer:

find the area of two triangles and subtract them.

Triangle 1 = 1/2 x 20 x 20 = 200

Triangle 2 = 1/2 x 15 x 10 = 75

Area of shaded region: 200 - 75 = 125

The answer is F. 125

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dsp73

Answer:

27.95 and 34.05 are compatible because when you add up the decimals, the equal 0, which makes it easier to add. 27. 95 + 34.05 = 61.00.

Same with 19.37 and 21.63, it adds up to 40.00

The answer to all of this would be 101.00

5 0

3 years ago

quester [9]

Answer: Approximately 22.62 degrees

===============================================

Work Shown:

cos(angle) = adjacent/hypotenuse

cos(y) = 12/13

y = arccos(12/13)

y = 22.6198649

y = 22.62

Notes:

Arccosine is the same as inverse cosine. On your calculator there should be a button labeled $\cos^{-1}$
Make sure your calculator is in degree mode
The decimal result for y, shown above, is approximate. I rounded to two decimal places to show the final answer. Round however you need to if your teacher instructs otherwise.