All sides of a cube are the same.
So to calculate the volume, you only need to know the measure of one side.
The formula for the volume of a cube is the length of the edge to the power of 3.
The measure of the known edge is 9, so the formula for volume would be 9^3.
9^3 is 9 • 9 • 9, which is 9 times 9 times 9.
9 • 9 = 81
81 • 9 = 729
The volume of this cube is 729 cubic feet.
There must be a typo in the answer choices because 729 cubic feet is the answer for the volume of the cube, even though it's not listed.
2/5 × 3/10
6/50
3/25
3/25 of the university's students live at home
2x - 3y - 9z = -32
x + 3z = 8
-3x + y - 4z = -8
Add all the equations together.
-3y - 10z = -32
By looking at the first equation, 2x - 3y - 9z = -3y - 10z.
So 2x = -z.
By looking at the second equation, x + 3z = (-0.5z) + 3z = 8.
So 2.5z = 8, and z = 3.2.
This means that x = -1.6.
Let's substitute into our original equations!
-3.2 - 3y - 28.8 = -32
4.8 + y - 12.8 = -8
Therefore, y = 0!
Since these answers do not contradict each other, they are dependent.
The answers are x = -1.6, y = 0, z = 3.2.
Answer:
10/18
Step-by-step explanation:
U only asked for what is equivalent
Answer:
Step-by-step explanation:
-2.2 - (-1.7) - (-0.4) = -4.2 + 0.3 = -3.9
