The mass of both combined would be 1150 grams or 1.150 kilograms
5-7=-2
-2+(3 x 5)=13
13 is the answer
also the 5 came from the leftover time. because if it started at 12 and then 4 hours passed it would now be 4 and there are 5 hours left from 4 to 9
Answer:
what are the equations
Step-by-step explanation:
Answer:
Step-by-step explanation:
to solve this system of equations we will add them
x-3y=-12
2x+3y=3 now +3y-3y=0
3x=-12+3
3x=-9
x=-3
plug in the first equation
-3-3y=-12
-3y=-12+3
-3y=-9
y=3