Step-by-step explanation:
2x - 3y = 9
2x + 3y = 3
__________ -
-6y = 6
y = -1
2x - 3y = 9
2x - 3(-1) = 9
2x - (-3) = 9
2x = 12
x = 6
Answer:
5.8 cups of flours
Step-by-step explanation:

Explanation
Step 1
find the coordinate of every point of the quadrilateral
C(-3,1)
J(0,1)
K(1,4)
M(4,-2)
Step 2
When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite (its sign is changed).
so

therefore

so, the answer is

i hope this helps you
Answer:
number of shoes is independent, number of racks is dependent
Step-by-step explanation:
the number of racks does not affect the number of shoes but if there are a lot of shoes, the number of racks will increase.
Answer:
190 cm^2
Step-by-step explanation:
There are 2 congruent square bases: 5 cm * 5 cm * 2 = 50 cm^2
There are 4 congruent rectangular sides: 5 cm * 7 cm * 4 = 140 cm^2
Total surface area: 50 cm^2 + 140 cm^2 = 190 cm^2