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3 years ago

What is equivalent to sq root -27

Mathematics

2 answers:

Katena32 [7]3 years ago

7 0

Negative numbers don’t have real square roots since a square is either positive or 0

lesya692 [45]3 years ago

6 0

$\sqrt{-27}=\sqrt{27}\sqrt{-1}=\boxed{3\sqrt{3}i}$ .

Result is a complex irrational number.

Hope this helps.

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Complete the point-slope equation of the line through (-8,-1)(−8,−1)

ZanzabumX [31]

Answer:

The equation of the line is y = -1

Step-by-step explanation:

In order to find the equation,y = mx + c, you have to find the gradient first using the formula :

$m = \frac{y2 - y1}{x2 - x2}$

Let (x1,y1) = (-8,-1) & (x2,y2) = (-8,-1),

m = (-1)-(-1)/-8-(-8)

= 0

Now, we have found the gradient, next using the formula, y = mx + c to find the equation :

y = mx + c

Let m=0,

At (-8,-1)

-1 = 0(-8) + c

c = -1

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22. What is the simplified form of the following expression? 12[6 ^ 2 / (5 ^ 2 - 4 ^ 2) + 7]

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Answer:

Step-by-step explanation:

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4 years ago

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Select the correct answer. Which table represents a nonlinear function?

Llana [10]

Answer:

Step-by-step explanation:

If equal changes in x result in equal changes in y, then the function is linear.

A. Are the changes from (2, 4) to (4, 1) and from (4, 1) to (6, 11) equal?

The change from (2, 4) to (4, 1):

When x changes from 2 to 4, the change is 4 - 2 = 2.

y changes from -9 to 1; the change is 1 - (-9) = 10

The change from (4, 1) to (6, 11):

When x changes from 4 to 6, the change is 6 - 4 = 2.

y changes from 1 to 11; the change is 11 - 1 = 10

For a change in x of 2, the change in y is 10 in both cases. This function is linear.

B. Are the changes from (2, -14) to (4, -16) and from (4, -16) to (6, -18) equal?

The change from (2, -14) to (4, -16):

When x changes from 2 to 4, the change is 4 - 2 = 2.

y changes from -14 to -16; the change is -16 - (-14) = -2

The change from (4, -16) to (6, -18):

When x changes from 4 to 6, the change is 6 - 4 = 2.

y changes from -16 to -18; the change is -18 - (-16) = -2

For a change in x of 2, the change in y is -2 in both cases. This function is linear.

C. Are the changes from (2, 0) to (4, 6) and from (4, 6) to (6, 16) equal?

The change from (2, 0) to (4, 6):

When x changes from 2 to 4, the change is 4 - 2 = 2.

y changes from 0 to 6; the change is 6 - 0 = 6

The change from (4, 6) to (6, 16):

When x changes from 4 to 6, the change is 6 - 4 = 2.

y changes from 6 to 16; the change is 16 - 6 = 10

For a change in x of 2, the change in y is 6 in one case and 10 in the other case. This function is not linear.

D. Are the changes from (2, -9) to (4, -6) and from (4, -6) to (6, -3) equal?

The change from (2, -9) to (4, -6):

When x changes from 2 to 4, the change is 4 - 2 = 2.

y changes from -9 to -6; the change is - 9 - (-6) = -3

The change from (4, -6) to (6, -3):

When x changes from 4 to 6, the change is 6 - 4 = 2.

y changes from -6 to -3; the change is -6 - (-3) = -3

For a change in x of 2, the change in y is -3 in both cases. This function is linear.

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4 years ago