Rajan drank 3/7 liter of water Monday before going jogging. He drank 2/3 liter of water after his jog. How much water did Rajan drink altogether? Write your answer as a mixed number. IT'S SO HARD FOR ME!!!

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

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:

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39