Which equation is equivalent to 1/4x + 1/5 =5

What point is the projection of q on a) r b) s c) t

The trigonometric ratios sine and secant are reciprocals of each other

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