PLEASE HELP!! Given the vectors u, v, and w below, evaluate the following expressions:

u= <3,7> v=<4,-5> w=<-2,9>

Find -2.5w

A. <5, -22.5>

B. <-5, 22.5>

C. <5, 22.5>

D. <-5, -22.5>

Atriangle has side lengths of 15 inches and 30 inches. it also has angles that measure 45º and 20º. which of the following identifies the possible third angle of the triangle? a. 15 in., 65º b. 45 in., 65º c. 17 in., 115º d. 14 in., 115º

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y

Find the area of a parallelogram with base 15 yards and height 21 2/3