19.0 is the only square root 362 can have
It is "D" because the equation is 2*3.14*25=157m
Hope That helps!
First note the intersections of each pair of lines.
x = 3 ⇒ y = 2•3 + 1 = 7 ⇒ (3, 7)
y = -3 ⇒ -3 = 2x + 1 ⇒ x = -2 ⇒ (-2, -3)
y = -3 and x = 3 ⇒ (3, -3)
Using the disk method, we consider disks with thickness ∆y and radius equal to the horizontal distance between the line y = 2x + 1 (or x = (y - 1)/2) and the axis of revolution, x = 3. Each disk will then contribute a volume of
∆V = π (radius)² (thickness) = π/4 (y - 1)² ∆y
As we let ∆y go to zero and let the number of disks go to infinity, the total volume of the resulting cone will be given by the integral
![\displaystyle \frac\pi4 \int_{-3}^7 (y-1)^2 \, dy](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%5Cpi4%20%5Cint_%7B-3%7D%5E7%20%28y-1%29%5E2%20%5C%2C%20dy)
-2x-8(-3+5)=-18
-2x+24-40=-18
-2x=-2
x=1
-2(1)-8y=-18
-2-8y=-18
-8y=-16
y=2
ANSWER:
x=1 y=2
10.5, since 35 is between 30 and 40 ((30+40)/2), the mistakes that correspond with them are 9 and 12, the number in between them is 10.5 (9+12=21, 21/2 is 10.5)