Prove that the locus of points from which there mutually perpendicular planes can be drawn to touch the ellipse is sphere x^2+y^2+z^2=a^2+b^2+c^2.

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

1/8 3/16 3/4

step-by-step explanation:

you put them as all the same denominator and multiply

y=20x

: )

hope this