The value of f(x)= 5x -4x²+3 when x= -1, is​

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?