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kifflom [539]
3 years ago
9

given the vector v has an initial point (-2,-6) and a terminal point of (1,2) write vector v as a linear combination of the stan

dard unit vector i and j.
Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
7 0

Answer:

v=3i+8j

Step-by-step explanation:

The given the vector v has an initial point (-2,-6) and a terminal point of (1,2).

To find the components of vector v, we subtract the terminal points from the initial point to obtain.

v=<1,2>-<-2,-6>

v=<1--2,2--6>

v=<1+2,2+6>

v=<3,8>

As a linear combination of the standard unit vectors.

v=3i+8j

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  log((6 +7x)/(3x -2)) = log(5)

Taking anti-logs gives ...

  (6 +7x)/(3x -2) = 5

  6 +7x = 5(3x -2) . . . . . multiply by (3x -2)

  7x +6 = 15x -10 . . . . . eliminate parentheses

  8x = 16 . . . . . . . . . . . add 10-7x to both sides

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The solution is x = 2.

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The graph shows the left side of the equation is equal to the right side for x=2.

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PLEASE ANSWERING THIS QUESTION!!!
Artemon [7]

The equation after completing the square is (z + 4)² = 80

The solutions to the given equation in the simplest radical form are z = -4 + 4√5 and z = -4 - 4√5

<h3>Completing the square </h3>

From the question, we are to solve the given quadratic equation by completing the square

The given equation is

z² +8z - 44 =20

First, add 44 to both sides of the equation

z² +8z - 44 + 44 = 20 + 44

z² +8z = 64

Now, divide the coefficient of z by 2, square the value and add to both sides

The coefficient of z is 8

Dividing

8/2 = 4

Squaring

4²

Now, add this to both sides

That is,

z² +8z +4² = 64 + 4²

(z + 4)² = 64 + 16

(z + 4)² = 80

The equation after completing the square is  

(z + 4)² = 80

Continuation

(z + 4)² = 80

Take the square root of both sides

√(z + 4)² = ±√80

z + 4 = ±√80

z = -4 ± √80

z = -4 ± 4√5

z = -4 + 4√5 and z = -4 - 4√5

Hence,

The equation after completing the square is (z + 4)² = 80

The solutions to the given equation in the simplest radical form are z = -4 + 4√5 and z = -4 - 4√5

Learn more on Completing the square here: brainly.com/question/49444

#SPJ1

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