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Crazy boy [7]
3 years ago
15

Use the dot product to find |v| when v=(-2, -1).

Mathematics
2 answers:
Anuta_ua [19.1K]3 years ago
5 0
For this case we have the following vector:
 v = (- 2, -1).
 Using product point we have:
 v.v = (-2, -1). (- 2, -1)
 v ^ 2 = (-2) * (- 2) + (-1) * (- 1)
 v ^ 2 = 4 + 1
 v ^ 2 = 5
 Then, clearing the module we have:
 v = root (5)
 Answer:
 
The module of the vector is given by:
 
v = root (5)
 
C. square root of 5
gtnhenbr [62]3 years ago
5 0

Answer:

C. square root of 5

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3 years ago
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Answer:

x=12, y=4

Step-by-step explanation:

All the sides are the same length.

3x+y = 40

4x-2y = 40

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---------------

5x = 60

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8 0
3 years ago
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