Step-by-step explanation:
assuming j+12 us equal to 0
j+12=0
j+12-12=0-12 (subtract 12 on both sides)
so j is now equal to
j = -12
Answer:
(1,-12)
Step-by-step explanation:
-10+5y=-50
5y=-60
y=-12
10x-60=-50
10x=10
x=1
Taking 6:00 AM as the starting point and time in minutes from the starting point, You get to the bust stop at 76 min.
(a) Every 9 minutes, bus run from the bus stop. So the last bus was on 72 min. So you are 4 min late. Therefore you have to wait for, 9 - 4 = 5 min.
(b) As shown earlier, you arrived 76 min after the buses begin running.
(c) The first time is 9 minutes after the starting time, which is 6:09 AM.
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Its a simultaneous equation:
lets make "x" the used games and "y" the new ones
4x + 2y = 84
6x + y = 78. (multiply this by 2 to cancel out y)
12x + 2y = 156
so now we subtract them:
12x - 4x = 156 - 84
x = 9
used games cost $9
new games cost 78 - 6(9) = $24
Janet has $120 but she already bought 3 NEW games so:
120 - 3(24) = $48 left
48/9 = how many used ones she can buy = 5. something
she can buy 5 used
