A car moves at a speed that allows it to move 45 yards in 4.5 seconds. About how long will it take a car at the same speed to move 80 yards?

Which of the following represents a number squared is equal to twenty more than nine times that number ? a) x squared = 9x + 20 b) x squared = 20x + 9 c) x squared > 9 + 20x d) x squared = 9 + x + 20

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Need this asap if anyone can i would be very grateful. if you could show workings that would really