No, because in most of the numbers the number in the tenths place is over 5 so you round up instead of keeping it the same.
Answer:
the second one
Step-by-step explanation:
All you can do to solve this is isolate the y
3x+2y=9 (subtract 3x from both sides)
2y=9-3x (divide both sides by 2)
y=9/2-3/2x or y=-3/2x+9/2
Hope this helps
Answer:
22.5
Step-by-step explanation:
To find the rate of speed per hour, you need to divide the kilometer (90) by the hours (4).
90/4=
22.5
Answer:
The measured side is not shown, so i will answer in a general way.
A cube is a 3-dimensional object with 6 square faces.
You know that all the sides of a square have the same length, then is the same for the cube.
To calculate the volume of a cube, we start with the area of the base.
The base is a square of sidelength L (Suppose that L is the length of the measured side)
The area of the base is:
A = L^2.
To find the volume, we must multiply the area of the base by the height of the fire (because the section of the base does not change).
And the height of the cube is also L.
Then the volume is:
V = L*a = L^3
