the braking distance of a vehicle is directly proportional to the square of its speed. when the speed of the vehicle is b m/s, it's breaking distance is d m. if the speed of the vehicle is increased by 200%. find the percentage increase in its breaking distance​

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

Aregular pentagon with a perimeter of 21 inches is dilated by a scale factor of 5/3 to create a new pentagon. what is the perimeter of the new pentagon?