The correct answer is to this problem is 4
Hello from MrBillDoesMath!
Answer:
f(-1) = 2
f(1) = 6
f(2) = 11
Discussion:
Let f(x) = 2x^3 - 3x^2 + 7. Then
f(-1) = 2 (-1)^3 - 3 (-1)^2 + 7 = -2 -3 + 7 = -5 + 7 = 2
f(1) = 2(1)^3 - 3(1)^2 + 7 = 2 -3 + 7 = -1 +7 = 6
f(2) = 2(2)^3 - 3(2)^2 + 7 = 2*8 - 3*4 + 7 = 16-12+7 = 11
Thank you,
MrB
Answer:
Step-by-step explanation:
The Silo is cylindrical in shape.
The farmer wants to paint only the sides of the Silo with red paint. This means that the top and bottom of the Silo will not be painted.
The formula for determining the surface area of a cylinder is expressed as
Surface area = 2πr² + 2πrh
Since the top and bottom is not included, the formula becomes 2πrh
From the information given,
h = 13 meters
Diameter = 10 meters
Radius = diameter/2 = 10/2 =
5 meters
Therefore, the amount of paint that would be needed in square meters is
2 × 3.14 × 5 × 13 = 408.2m²
Answer: 2in
Step-by-step explanation:
Hi, to answer this question we have to apply proportions:
The correct scale on the blueprint is : 1/4 inch represents 3 feet.
So, the proportion is: 1/4 inch/ 3 feet = (1/4) /3
For 24 feet:
x inches /24 feet = x/24
So:
(1/4)/3 = x/24
Solving for x (inches)
[(1/4)/3 ] (24) =x
x =2 inches
Feel free to ask for more if needed or if you did not understand something.