2 years ago

The midpoint of AC is B(5, -8). One endpoint is A(1, 12). What are the coordinates of endpoint C?

1 answer:

7 0

Here is The formula ( x1 + x2 / 2 , y1 + y2 / 2 )

so (5+1 / 2 , -8+12 /2 )

solve and you'll get your answer.

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zubka84 [21]

I assume the equation is supposed to be

$3^{x+2}=8^{x-1}$

Then we can write

$9\cdot3^x=\dfrac18\cdot8^x\implies\left(\dfrac38\right)^x=\dfrac1{72}$

Take the logarithm of base 3/8 on both sides:

$\log_{3/8}\left(\dfrac38\right)^x=\log_{3/8}\dfrac1{72}$

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- - -

If the equation is actually $3^x+2=8^x-1$ , I'm afraid it cannot be solved exactly.

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3 years ago