The main cables of a suspension bridge are 20 meters above the road at the towers and 8 meters above the center of the road. The bridge is 60 meters long. The cables hang in the shape of a parabola. How long is a vertical cable 15 meters from the center of the bridge? First, write the standard conic form of the parabola.

x^2 =_ ( y - _)

The length of a vertical cable that is 15 meters from the center of the bridge is _ meters. Do not round until the end. Round to the nearest tenth of a meter.

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.