Arecursive rule for a geometric sequence is a1=4/9; an=3an−1. what is the explicit rule for this sequence? enter your answer in the box. an=

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

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

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3