Answer:
5x + 10y = 90
Step-by-step explanation:
X is the number of times she takes the 5 mile, so the total distance would be 5x. Y is the number of times she takes the 10 mile, so the total distance would be 10y. And together they equal 90 miles, so 5x + 10y =90. Hope this helps.
Answer:
13) 
14) 
15) 
16) 
Step-by-step explanation:
13) 
14) 
15) 
16) 
Answer:
324
Step-by-step explanation:
Answer:

Step-by-step explanation:
we know that
In the diagram


Equate


Answer: 5/8
Step-by-step explanation:
You could convert 1/4 to 2/8 because the numbers you're subtracting have a common factor of 2. After subtracting 2/8 from 7/8, you're left with 5/8.