The speed of sound is approximately 1.2 × 10^3 km/h. how long does it take for sound to travel 7.2 × 10^2 km?

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Solve the equation x/4 - 5= -8 -27 -12 -7 12

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?