u = 9 i - 6 j
v = -3 i - 2j
w = 19 i + 15 j
u • v = (9 i - 6 j) • (-3 i - 2j)
Distribute the dot products:
u • v = 9*(-3) (i • i) + 9*(-2) (i • j) + (-6)*(-3) (j • i) + (-6)*(-2) (j • j)
i and j are orthogonal unit vectors, so their dot products are 0, while i • i = j • j = 1. So we have
u • v = 9*(-3) + (-6)*(-2) = -27 + 12 = -15
In other words, the dot product can be computed by simply multiplying corresponding components, and taking the total.
u • w = 9*19 + (-6)*15 = 81
H and J are out bc that's subtracting the 14 candy bars, which we just want to subtract the weight of the 10 oz of the box from 80 oz to get the total amount of candy bar ox, which equals 70 oz. Since you want to find how much each candy bar weighs you have to divide the difference between 14. - The answer is answer letter G.
Answer:
D or B
Step-by-step explanation:
sorry if its wrong
Answer:
6−24
Step-by-step explanation: