how do you solve -2.8k-4.31=-15.79 or 1.9m-3=-12.31 or 2.1a+1.4=-14.245 or 3.8n-4.8=-21.9 ?

1 answer:

5 0

Consider posting each question separately, please.

Given -2.8k-4.31=-15.79 :

1) Isolate the "k" term on the left by adding 4.31 to both sides of this equation.
2) Simplify the right side.
3) Divide both sides by -2.8 and you'll have the answer: k = ?

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Answer:

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Step-by-step explanation:

The complete question in the attached figure

we know that

According to the Right Triangle Altitude Theorem,

$(BD)^2 = (AD)(CD)$

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$16=x^2-6x\\x^2-6x-16=0$

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see the attached figure N 2

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