How do you do pythagorean theorem ? , i don't understand whether or not to add or subtract before finding the square root .

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup