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salantis [7]
3 years ago
13

I need help solving it

Mathematics
2 answers:
blagie [28]3 years ago
8 0
X2-64=0
x2=64

x=8 because when multiplied by itself, and plugged back in, it works
Mice21 [21]3 years ago
7 0
Step by step on this problem. Hope this helps. Good luck! Mark brainest plz

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Evaluate the expression without using a calculator<br><br> Tan(arccos3/4)
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Answer:

  (√7)/3

Step-by-step explanation:

The relationship between tangent and cosine is ...

  tan(α) = √(1/cos(α)² -1)

The cosine of the angle is given as 3/4, so the tangent is ...

  tan(arccos(3/4)) = √(1/(3/4)² -1) = √(16/9 -1) = √(7/9)

  tan(arccos(3/4)) = (√7)/3

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goldfiish [28.3K]
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3 years ago
URGENT HELP NEEDED ANSWER WILL GET BRAINLIEST
sergiy2304 [10]

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A. and C.

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2 years ago
Write a story to match the equation x + 2 1 2 = 10 . Explain what x represents in your story. Solve the equation. Explain or sho
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