The equations in the system were added to solve for y what is the value of y x+6y=10

-x+3y=-15

x + 6y = 10

-x + 3y = -15

9y = -5

y = -5/9

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.

< 4, -5>

step-by-step explanation:

starting from g. we move 4 right and then 5 down to get to h. that means the vector is < 4, -5>