How meany people use khan for there math?

Given f (x) = x^2+8x+13, what is this quadratic function in vertex form? f (x) = (x+8) ^2+13 f (x) = (x-8) ^ 2 - 13 f (x) = (x+4) ^ 2 + 29 f (x) = (x+4) ^ 2 - 3

The function f (x) = x^2 - 4 is translated 3 units to the right to create function g (x). What is g (9) ?

What is the product? 4k+2/k^2-4*k-2/2k+1

It took 3/4 to comelete 1 game of cards. How many games can be completed in 2 1/4 h? (a) Can more than 1 game be completed in 2 1/4h? Can more or fewer than 4 games be completed? Explain your reasoning. (b) Use a model to solve the situation.

A ship leaves port at noon and has a bearing of S 24° W. The ship sails at 20 knots. At 6:00 P. M., the ship changes course to due west. a. How many nautical miles south and how many nautical miles west will the ship have traveled by 6:00 P. M.? b.

Can 25, 32, 60 make a right triangle?

Katerina draws a square. she wants to draw one line to divide the square into 2 triangles. is it possible for her to divide the square into 2 obtuse triangles?

9 + (1+43) = (19+1) + 43 what property of addition is it.

Thomas hiked 6 miles on Monday 10 miles on Tuesday and 8 miles on Wednesday which value is closest to the mean number of miles he hiked over the three day period

If 2x-1/3=-4x then x=