Number of times she climbed 5-mile mountain trail = x
Number of times she climbed 10-mile trail = y
total distance of the 5-mile mountain trail will be = 5*x =5x
total distance of the 10-mile mountain trail will be = 10*y = 10y
equation that can be used to find the number of times she hiked each trail is therefore
5x + 10y = 90
Answer:
the answer is 25 according to Khan
Step-by-step explanation:
Check the attached file for the answer.
Answer:
The correct option should have been
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Step-by-step explanation:
Given the expression

solving the expression

Remove parentheses: (a) = a

Group like terms

Add similar elements

It is clear that not a single given option is
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The correct option should have been
.