A group of workers can plant 6 3/4hectares in 1 7/8 days.
What is the unit rate in hectares per day?

Write your answer as a fraction or a mixed number in simplest form.

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

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

Evaluate the expression. (9 + 5)(3 + 2)0