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NeX [460]
3 years ago
12

Evaluate 6y + x5 When x = -3, y = -5 please help <33 current failing:(

Mathematics
2 answers:
Radda [10]3 years ago
8 0

Answer:

-35

Step-by-step explanation:

if you take 6 x -5 ( y ) then -3 x 5 ( x ) then add them together then you get -35.

Andrew [12]3 years ago
4 0

Answer:

Step-by-step explanation:

Since you are failing, i will not give you the answer directly so you can learn, and not just copy the answer down. First, think about what the variable means. They have an open spot in the equation and they give you what to fill in. since x=-3, multiply 5 by -3. You do this because in the equation it says x5 which is equal to x times 5. Then substitute the y, or -5 to have 6(-5)+(-3)5

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Answer:

Part I: cot(15 degrees) = cot(45 - 30)

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<em>Everything is done in degrees</em>

<em />

Two angles that differ by 15 degrees that is easy to evaluate is 30 degrees and 45 degrees. The cot(15 degrees) = cot(45 - 30) = 1/tan(45-30) = (1+tan45tan30)/(tan30 - tan45) = (1+ sqrt(3))/(sqrt(3) - 1)

We rationalize this by multiplying 1+ sqrt(3) in the top and bottom, getting:

(4 + 2sqrt(3))/2 = 2 + sqrt(3)

I hope this helps! :)

8 0
3 years ago
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Vilka [71]

Answer:

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7 0
3 years ago
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baherus [9]
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