How do you find the height of a cone when given the slant height and radius? Is there a formula I use to input numbers and then solve?

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1

"which statement is necessarily true if bd is an altitude to the hypotenuse of right ? abc? a.) ? adb? ? bdc b.) ? adb~? bdc c.) abbc=acbd d.) ? bac? ? bdc"