4 years ago

4. Use AABC to find the value of cos A.

1 answer:

Bess [88]4 years ago

8 0

I had dis before on a test

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Maurinko [17]

Step-by-step explanation:

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3 years ago

melamori03 [73]

Answer:

the third one

Step-by-step explanation:

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3 years ago

Sloan [31]

600/50=12
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4 years ago

leva [86]

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1/2^4

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3 years ago

Arisa [49]

Answer:

k = 25

Step-by-step explanation:

(2x - sqrt(k) )^2 Expand this as a binomial

4x^2 - 4x*sqrt(k) + k The middle term must be -20x Solve for k so it is

-4xsqrt(k) = - 20x Divide by -4x

sqrt(k) = -20x/-4x Do the division

sqrt(k) = 5 Square both sides

k = 25

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3 years ago