Minus a from both sides
x-a=-2by²
times both sides by -1
a-x=2by²
divide both sides by 2b
$\frac{a-x}{2b}=y^2$
sqrt both sides
$y= \sqrt{\frac{a-x}{2b}}$

5 0

3 years ago

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Need help with these plzz wen i get all the correct answers i will friend u and give u 42 more points.

sveta [45]

Answer:

By using pythagoras formula

5 0

3 years ago

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What are the rate of changes for

astraxan [27]

<span>39 & 16.5 = -22.5
30 & 12.4 = -17.6
28 & 10.4 = -17.6
19 & 10.3 = -8.7
23 & 11.2 = -11.8
if the values are y values you will subtract them from each other to get the numerical value and because they all go from a larger number to a smaller number the rate is a negative. if they were from a smaller value to a larger value teh rates of change would be positive.
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3 0

3 years ago

Which expression is 8y-5x+13y equivalent to after being simplified?

Inga [223]

The answer is a because you add the same variables and 5x stays the same

3 0

3 years ago