Proving the parallelogram diagonal theorem answers please

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length