We have the following vectors:
u = (a, b)
v = (c, d)
We observe that the vectors form an angle of 90 degrees.
Therefore, the product u.v is equal to zero.
We have then:
u.v = (a, b). (c, d) = 0
u.v = ac + bd = 0
ac = -bd
Answer:
B) ac = -bd

6 0

3 years ago

Sophie shakes hands with a group of 5 people. How many different hands shakes can that do without anybody hand shaking another p

Troyanec [42]

I would say that it would be 10

3 0

3 years ago

Read 2 more answers

How can I solve What is 275% of 4

Trava [24]

Is/of = %/100
plug in your known values
is/4 = 275/100
cross multiply & divide
11 = is
11 is 275% of 4

7 0

3 years ago

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Please help me find the solution

11Alexandr11 [23.1K]

C.) (-4,3)
Use the process of elimination and plug in the answer of x or y to one of the problems

8 0

4 years ago