2h 40 min
Subtract the time and get this answer
Mark brainliest please
Answer:
Step-by-step explanation:
I assume you need help with the first picture:
Let 
Then

Clearly you can see that the sum of 2 rational numbers gives a rational number.
1.) 28-3x-4= 2x+12+x
2.) 24-3x= 3x+12
3.)24-6x=12
4.)-6x=-12
5.)x=2
1. 4b plus 6
2. 6n minus 3c
3. 10d plus e
D =√(x2-x1)^2 + (y2-y1)^2
......._____________
5 =√(3-0)^2 + (k-1)^2
.......__________
5 =√3^2 + (k-1)^2
25 = 9 + (k-1)^2
16 = k^2 - 2k + 1
k^2 -2k - 15 = 0
(k - 5)(k + 3) = 0
k - 5 = 0.....or.......(k + 3) = 0
k = 5.........or.......k = -3