7). C
8). 60
n = 5(10) + 10
n = 50 + 10
n = 60
9). 17
f(x) = -2x + 7 plug the -5 in for x
f(x) = -2(-5) + 7
= 10 + 7
= 17
10).
49 pieces
First you change the foot into inches, so it is 1200
then you divide so it is 1200/ 24 3/8 = 49 3/13
but the remaining doesn't count since it is not one whole piece
Answer:
It would be 9,738.54
Step-by-step explanation: For starters, V= r^2(3.14)h
Make things easier by changing 20 1/2 to 20.5)) and 1 1/2 to 1.2))
Now multiply them to get your diameter. 20.5 * 1.20= 24.6.
You now have a diameter of 24.6. Now, divide 24.6 by 2 to get your radius. So, now you have a radius of 12.3. All you have to do now is plug in your numbers.
V= r^2(3.14)h V= (12.3)^2 (3.14) 20.5
you should get 9738.5373, but rounding by the hundredths place gets you 9738.54
Do well on your tests guys!
