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vampirchik [111]
3 years ago
12

What is the value of (Negative one-half)–4?

Mathematics
2 answers:
Montano1993 [528]3 years ago
5 0

The answer is D) 16.

ivanzaharov [21]3 years ago
4 0
I’m assuming you mean -1/4 -4, and since you’re subtracting a negative by a negative, it would be -4 1/4(mixed number)
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Answer:

D). 4\sqrt{2}

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<u>STEP 1a:</u> Find the last angle of the triangle. ( which is angle A)

A+90+45=180

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<u>STEP 1c:</u> Then Move all terms not containing A to the right side of the equation by subtracting 135 from both sides of the equation

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<u>STEP 1d:</u> Subtract 135 from 180.

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STEP 2a: Find side b next.

STEP 2b: The cosine of an angle is equal to the ratio of the adjacent side to the hypotenuse.

cos(A)=\frac{adj}{hyp}

STEP 2c: Substitute the name of each side into the definition of the cosine function.

cos(A)=\frac{b}{c}

STEP 2d: Set up the equation to solve for the adjacent side, in this case b.

b=c*cos(A)

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STEP 2f: Cancel the common factor of 2.

a=4\sqrt{2}

HOPE THIS HELPS!

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