Mary,Tom,Sophia & Isaac share minutes on their cell phone plan. Mary used 1/4 of the minutes,Tom used 0.5 of the minutes,and
Sophia used 0.2 of the minutes. What percent of the cell phone plan minutes are left for Isaac to use?
1 answer:
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We assume that we need to simplify the expression in two different ways.
Answer:
One way: Raise both, the numerator and denominator, to the third power, and then simplify the expression.
Second way: Simplify the terms inside parentheses, and then raise the result to the third power.
The result of both ways is the same:
Step-by-step explanation:
<em>One way</em>
Raise both, the numerator and denominator, to the third power, and then simplify the expression:
This is the first simplification.
<em>Second way</em>
Simplify the terms inside parentheses, and then raise the result to the third power.
or .