DeAndre drinks 15 ounces of water, which is 3/5
of his bottle.

Write an equation to represent the total amount of water
in DeAndre's bottle? Some one please help!

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.