Answer:
Step-by-step explanation:
x -2y = 1
x - y = 3
x - 2y = 1
-x + y = -3
-y = -2
y = 2
x - 2 = 3
x = 5
(5, 2)
Answer:

Step-by-step explanation:
Remember that the sides of a cube always have the same length.
In this case the length of the sides L is:
.
The cubes have 6 faces. Then the surface area of the cube is equal to the area of its 6 faces.
Since all sides of the cube have the same measure, then the area of each face is:

Then the area of the 6 faces is:



Answer:
B
Step-by-step explanation:
5(4)-2(1)=
20-2=
18
I thiiink 45pi aka 141.372...
There aren't any answer options so I will just simplify the expression:
10(2p+q)
20p+10q