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notka56 [123]
3 years ago
8

Which lines are perpendicular? A) A and B B) A and C C) B and C D) A and D

Mathematics
2 answers:
Fofino [41]3 years ago
6 0
B) A and C
Because I had the same question and got it right
Gala2k [10]3 years ago
4 0

Answer:

B) A and C

Step-by-step explanation:

A and C are negative reciprocals of each other.

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There is a bag with only red marbles and blue marbles.
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Answer:

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Step-by-step explanation:

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How do you add vectors? Add the vector 3,4 to the vector that goes 7 units at an angle of 2π/3.
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The sum of two vectors is (- 0.5, 10.1)

<u>Explanation: </u>

To add two vectors, add the corresponding components.

Let u =⟨u1,u2⟩ and v =⟨v1,v2⟩ be two vectors.

Then, the sum of u and v is the vector

u +v =⟨u1+v1, u2+v2⟩

(b)

Two vectors = ( 3, 4 )

angle 2π/3 = 120°

In x axis, the vector is = 7 cos 120°

                           = 7 X -\frac{1}{2} \\\\= -3.5

In y axis, the vector is = 7 sin 120°

                                  = 7 X 0.866

                                  = 6.062

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Sum of two vectors = [( 3 + (-3.5) ), (4 + 6.062)]

                              = (- 0.5, 10.1)

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-5,-4,-3,-2,-1,0,1,2,3,4,5

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I guess I was help full for u

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