Mistys surgery lasted 3 1/4 hours. Convert at the time to the seconds

Select the correct answer from each drop-down menu. the length of a rectangle is 5 inches more than its width. the area of the rectangle is 50 square inches. the quadratic equation that represents this situation is the length of the rectangle is inches.

Math question.. plz me .. best answer all

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)