The population in the trapezoid-shaped region shown is about 3000 people. how many people are there per square mile?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

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

Find the area of the triangle shown 3 by 6