The answer is 10. Hope this helps.
Multiply the numbers
2/5 •(3-8)^2
Subtract (3-8)
2/5• (-5)^2
A negative base raised to an even power equals a positive
2/5• (5)^2
Reduce the expression with 5.
2•5
10
C., the two congruent sides make
The question is given to be:

Applying the law of indices:

Therefore, we have the expression to be:

Recall the law of negative exponents:

Therefore, the expression becomes:

The expression is also equivalent to:

Since:

ANSWER
The correct options are OPTION C, OPTION E, and OPTION F.
Answer:
1/3 of the school in 5 minutes or in 15 minutes he will mop the whole entire school.
Step-by-step explanation: