You have nine gold coins, but one isn’t pure. one has been minted with a cheap alloy, and is known to be heavier than the others. you have a simple balance scale. how do you determine the impure coin with only two weighings?

For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.

Can someone tell me if this is perpendicular? !

The quotient of 15 and a number is 1 over 3 written as an equation