Answer:(4,1)
Step-by-step explanation:
-x+3y=-1
X-2y= 2
______
Change second equation move all to right side to leave x on left side .
-x+3y= -1
X= 2y+2
Now substitute second equation that you made into first equation to find y.
-(2y+2)+3y= -1
-2y-2+3y=-1
Y-2=-1
Y= -1+2
Y= 1
Now substitute your answer of y into second equation you created to find x .
X= 2y+2
X= 2(1)+2
X=2+2
X=4
B because you are looking for an equation in the problem so if it starts at 16 and you are adding 2 gallons per hour you get 16+2x. Then for the other tank you start with 20 gallons and you are loosing 3 gallons per hour so you get 20-3x. To solve the equation you make them = each other so then you have 16+2x=20-3x.
Answer:
C
Step-by-step explanation:
The square root of 36 is 6. 36 is a perfect square. 6 is a natural number and therefore is rational.
Answer:82.24 meters were on each roll
Step-by-step explanation: 411.2/5=82.24
