Which equation could be used to determine the area of a rectangle that is 4 cm wide and 10 cm long? a. a = 4 + 10 b. a = 4 × 10 c. a = 2 × (10 + 4) d. a = 2 × 10 + 2 × 4

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?