If a number is added to the numerator of 7/9 and the same number is subtracted from the denominator, the result is 3. Find the number.

Find percent notation for 0.008 0.008=

Sketch one cycle if the cosine function y=2cos2theta

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