Answer:
Protractor
Step-by-step explanation:
You use a ruler to draw a straight line.
You use a protractor to draw an angle.
Answer:
Step-by-step explanation:
The most appropriate choice of volume of a cone is given by-

What is volume of a cone?
The volume of a cone is the amount of space occupied by the cone.
Volume of a cone is given by the formula

Where, r is the radius of cone and h is the height of the cone.
Here,

To learn more about volume of a cone, refer to the link:
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Answer:
The cost of extracting the first 50 tons of copper is $151,000.
Step-by-step explanation:
Start-up costs of $150,000.
For the 50 tons of cooper.

So

1 thousand dollars.
So
$150,000 + $1,000 = $151,000
The cost of extracting the first 50 tons of copper is $151,000.
3x + 28
We can combine 7x and -4x because they are like terms. 7x -4x is equal to 3x. Now we rewrite the expression as 3x + 28.
Let "n" be a number
9 + 3n = 57
3n = 57 - 9
3n = 48
n = 48/3
n = 16