-12 + 9y = -57
add 12 to both sides, 9y = -45
divide 9 from both sides to isolate the y
y = -5
Step-by-step explanation:
Solve by Subsitution
Replace this into the second equation
Write in standard form
Use the quadratic formula, and our answer will be
(6.97,43.02)
(43.02,6.97)
I am bad at this types of questions but will give you what i would write of the question if i had it
If his run is 16/8 miles per day, 8/10 of the run is 16/8×8/10= 2×8/10
= 16/10
= 1.6
but... i am not sure if the question requires yoi to add the miles from the pervious day as the break was only stated in the second day. If i were you, i will leave the answer as 1.6 miles.
Slope is 3
3/1
Rise3 and 1 to the right called run
Yes they are
Hope this helps
