Examine the system of equations. 6x + 11y = –57 –8x – 27y = 65 Sherri multiplied the first equation by 8 and the second equation
by 6 to eliminate the x-variable. Could Sherri also multiply the equations by two different numbers to eliminate the x-variable? Which statements are true? Check all that apply. Yes, she could use 27 and 11. Yes, she could use 4 and 3. Yes, she could use –8 and –6. Yes, she could use –27 and –11. Yes, she could use –4 and –3. Yes, she could use 65 and 57. No, these are the only effective multipliers.
See attachment for one such shell. The volume is given by the sum of infinitely many thin shells like this, each with radius and height determined by the vertical distance between the upper blue curve and the lower orange curve for any given , i.e. .
and height determined by the vertical distance between the upper blue curve and the lower orange curve for any given 
.