The Pythagorean Theorem, given by the formula a^2+b^2=c^2 , relates the three sides of a right triangle. Solve the formula for the positive value of a in terms of b and c.

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Which pair of lines is parallel? a. y=4x+1 and y+4=5 b. y=-2+x and 2y-2x=-2 c. y=1/4x + 2 and y-2=1/2x d. y=1/5x+1 and 5y+x= 10

Me. drysdale earned 906.25 in interest in one year on money that he had deposited in his local bank if the bank paid an interest rate of 6.25% how much money did mr. drysdale deposit