Question

Simplify the expression.

(6 - sqrt (11)(6 + sqrt(11)

Answer 1

6^2 -11=36-11 =25

Answer 2

hell yea thanks b

Answer 3

@kevin4baller u're welcome

Answer 4

Suppose that a sphere with radius 5a has the same volume as a cone of radius 3a. What is the height of the cone? Give your answer in terms of a. Use the formulas v=4/3 sqrt^3 and v=1/3sqrt^2h for the volumes of a sphere and cone respectively.

Answer 5

cone volume is 1/3pi*r^2*h

Answer 6

sphere volume is 4/3pi*R^3

Answer 7

so r^2*h=4R^3

Answer 8

then h*9*a^2=4*125*a^3

Answer 9

h=(4*125)a/9=500a/9

Answer 10

@kevin4baller got it?