Jim's time is 5:50 and John's time is 6:40.
Yes they are equivalent fractions
To find the inverse we swap y and x and solve for y:
x = 9y + 15
x - 15 = 9y
y = (x-15)/9
Last choice
Here the two angles are supplementary, which means sum of these angles equal to 180 degrees.
So equation is:
10x-20+6x+8=180
Add like terms
16x-12=180
16x=192
x=12
Answer: x=12
