Find the sum of vectors u = <-2, 6> and v = <4, -9> , and then find the magnitude of u + v. u + v = < _ , _ >,
|| u + v || = _ units

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

Which number completes the inequality? 2/3 < _ < 7/9