Answer:
Step-by-step explanation:
You want to isolate r. As you can see all the numbers on the right would be multiplied so to isolate r you would have to divide the numbers on the right and do the same to the left side.
The answer is D.
This is because you take 125 and multiply it by 100 to get 12,500 ft.
Answer:
27 years old
Step-by-step explanation:
Let Alvin's age be x and Elga's age is y:
y - x = 15
x + y = 27
2y = 42 (use elimination method)
y = 21
x = 6 (plug it back into either equation)
Therefore Alvin is 6 and Elga is 27
You could divide 100 by 4 which is 25. Then divide 69 by 4 which would bring you to 17.25. 169 divided by 4 is 42.25. The answer would be 42 with a remainder of 1
