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Alina [70]
2 years ago
10

Find the angle 0 between v=12i-5j and w= -4i-3j HELP PLSSS

Mathematics
1 answer:
ruslelena [56]2 years ago
7 0

Answer:

Consider the given vectors.

a=3i+2j−6k

b=4i−3j+k

 Now,

a⋅b=(3i+2j−6k)(4i−3j+k)

a⋅b=12−6−6=0

 Therefore,

Two vectors a and b are perpendicular.

 Thus, the angle between the vectors a and b =90∘

 Hence, this is the answer.

Step-by-step explanation:

I really hope this help you:)

if not I'm sorry:(

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What are the coordinates of point B on \overline{AC} such that AB = 1/2 BC
marta [7]

Answer:

C. B(x,y) = \left(3,-\frac{16}{3} \right)

Step-by-step explanation:

Let A(x,y) = (6,-7), B(x,y) = (x,y) and C(x,y) = (-3,-2). From statement we know that AB = \frac{1}{2}\cdot BC, which is equivalent to the following linear algebraic formula:

B(x,y) -A(x,y) = \frac{1}{2}\cdot [C(x,y)-B(x,y)] (1)

B(x,y)-A(x,y) = \frac{1}{2}\cdot C(x,y)-\frac{1}{2}\cdot B(x,y)

\frac{3}{2}\cdot B(x,y) = \frac{1}{2}\cdot C(x,y)+A(x,y)

B(x,y) = \frac{1}{3}\cdot C(x,y) +\frac{2}{3}\cdot A(x,y) (2)

Then, the coordinates of point B on AC are:

B(x,y) = \frac{1}{3}\cdot (-3,-2)+\frac{2}{3}\cdot (6,-7)

B(x,y) = \left(-1, -\frac{2}{3}\right)+\left(4, -\frac{14}{3} \right)

B(x,y) = \left(3,-\frac{16}{3} \right)

Which means that correct answer is C.

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Answer:

The answer is 30c^3y

Step-by-step explanation:

The LCM is the smallest number that all the numbers can divide in.

6 0
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