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FromTheMoon [43]
3 years ago
5

What is x^2 + v = w when you have to make x the subjectim really stuck

Mathematics
2 answers:
ipn [44]3 years ago
6 0
X²+v=w (move v to w)
x²=w-v
x=√w-v (then square root w-v)
ArbitrLikvidat [17]3 years ago
5 0
Substract v to both sides of the equation: x^2+v-v = w-v
you get x^2=w-v
Now take the square root of both sides: root(x^2) = root(w-v)
you get x= sq root (w-v)   or        x= +/-  sq root(w-v)
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The word in the problem that indicates that a negative sign should be used is "descend"

<h3></h3><h3>How many meters did he descend?</h3>

We know that he stops for water breaks four times, and between each water break, he descends 15 meters.

The written equation is:

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Why the negative sign is used?

The negative sign is used because the hiker is descending, so its height is decreasing. The word in the problem that indicates that a negative sign should be used is "descend"

If you want to learn more about signs:

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