-2y=4 D)
13y = -26
27)
The product of a number minus ten and nine equals fifty when decreased by seven. Which equation relates the sentence?
fic
A)
7(x - 10) - 9 - 50
ght
B)
7(10 - x) - 9 - 50
e
סחור
9(x - 10) - 7 = 50
57
bols
D)
9(10 - x) - 7 = 50
28)
у

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)