which is the corect first step in finding the area of the base of a cylinder with a volume of 140 cubic meters and a height of 1
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Hi! Your answer is D explain below!
The absolute value returns the "positive version" of a number.
In other words, if the number is positive, it remains positive; if the number is negative, it changes sign.
So, if we want , we want the "positive version" of x to be 9.
This can happen in two ways: if x is already 9, then its absolute value is still nine. If instead x=-9, its positive value will be 9 again.
In formula, we have
because