Answer:
1,200
Step-by-step explanation:
So first we need to find the perimeter

so it costs 10 per meter
Answer:
B, D
Step-by-step explanation:
Solve all equations:
A.

This is false equality, so this equation has no solutions.
B.

This equality is true for all values of x, so this equation has infinitely many solutions.
C.

This equation has the unique solution.
D.

This equality is true for all values of x, so this equation has infinitely many solutions.
E.

This equation has the unique solution.
Answer:
The volume of the metal used is 5277.9 cm³.
Step-by-step explanation:
The volume of a cylinder is given by:

Where:
r: is the radius
h: is the height = 50 cm
The volume of metal (
) can be found by subtracting the internal volume (
) from the external volume (
):

The external radius is given by the sum of the internal radius with the tickness:

Hence, the volume is:

Therefore, the volume of the metal used is 5277.9 cm³.
I hope it helps you!
Answer:
6
Step-by-step explanation:
4 x 3 = 12
8 x 3 = 24
12 / 4 = 3
24 / 4 = 6
x must be 6
Answer:
b
Step-by-step explanation:
Turn them into decimals 32.5 - 24.75 for easier subtraction