3 cases / 4 weeks = 0.75 cases per week
for 13 weeks = (0.75 * 13) = 9.75 cases
9.75 - 5 = 4.75 rounded = 5...he needs to order 5 cases
Answer:
2,160
Step-by-step explanation:
598 + 20 = 618
618 + 987 = 1,605
1,605 + 78 = 1,683
1,683 + 90 = 1,773
1,773 + 87 = 1,860
1,860 + 80 = 1,940
1,940 + 60 = 2,000
2000 + 70 = 2,070
2070 + 90 = 2,160
Answer:
Step-by-step explanation:
y-3 = 3(x+1)
Edited answer: 97 girls didn't have brown eyes
Work Shown: 136 girls in total, then subtract that by how many girls did have brown eyes. And you get the equation 136-39= which equals to 97 girls.
Eliminate one variable at a time. We have three equations so we can solve for three variables.
(5x-y+z=4)-5(x+2y-z=5)=-11y+6z=-21
-2(x+2y-z=5)+(2x+3y-3z=5)=-y-z=-5
Now using the two yz equations above to cancel out z
(-11y+6z=-21)+6(-y-z=-5)=-17y=-51
-17y=-51 divide both sides by -17
y=3, making -y-z=-5 become:
-3-z=-5, z=2, making <span>5x-y+z=4 become:
5x-3+2=4
5x-1=4
5x=5
x=1
So the solution to the system of equations, (x,y,z) is (1,3,2)</span>
