Find all values of k for which the following system of equation has two solutions (x2 / a2) + (y2 / b2) = 1 , x2 + y2 = k

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

Which equation is equivalent to the given expression? -(1/2y+1/4) a. -1/4(1+2y) b. 1/4(2y-1) c. -2(1/4y-1/8) d. 2(1/8-1/4y)

Write the equation of the circle centered at (10,-2) with radius 2