Bradford T. answered 05/15/21
Tutor
4.9
(29)
Retired Engineer / Upper level math instructor
I'm assuming the question is (4u)•v
4u = 20i-4j
(20i-4j)•(4i+j) = 80 - 4 = 76
Ty H.
asked 05/15/21
Bradford T. answered 05/15/21
Retired Engineer / Upper level math instructor
I'm assuming the question is (4u)•v
4u = 20i-4j
(20i-4j)•(4i+j) = 80 - 4 = 76
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