Solve the following system of equations. Express your answer as an ordered pair in the format (a, b),with no spaces between the numbers or symbols 2x+7y=-1
4x-3y=-19

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

Sketch one cycle if the cosine function y=2cos2theta