Math ! i'm trying to use dot products and vectors for my pre-calc class..:
let u = < -6, 1> , v = < -5, 2> . find -4u + 2v.
i thought i knew how to do it but when solved i don't get any of the answers available:
< 34, -8> , < 14, 0> , < 14, 3> , < 44, -12>

a. 74 degrees

step-by-step explanation:

because the lines through the side and the box in the corners shows that these are congruent triangles and since they are mirrored the 37 degrees is also mirrored so the answer is 37 * 2 which is 74.

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).