Answer:

Step-by-step explanation:
First simplify the equation.
Now multiply both sides by 3.
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Answer:
1/2-7=1.5
Step-by-step explanation:
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Hey there!
The answer is √20 or approximately 4.47
We can use the Pythagoreon Theorem, which is
.
and
are the names of the two sides, and
is the name of the hypotenuse leg, or the longest side. We will plug the numbers into the formula, and solve:

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