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maks197457 [2]
3 years ago
8

Will mark brainlist if the correct answer. Simplify 6√-20

Mathematics
2 answers:
Svetach [21]3 years ago
8 0

Answer:

12i √5

Step-by-step explanation:

12i √5 is the answer. You have a negative square root so the answer must have the i, for imaginary number, in it.

iogann1982 [59]3 years ago
3 0

Answer:

The correct answer is 26.8328157

Step-by-step explanation:

All you have to do to get this answer is you have to...

Let sqrt (x) - sqrt(y) be the square root.

6 - sqrt(20) = x + y - 2 * sqrt(xy)

So x+y = 6. And x * y = 5.

Clearly x = 5 and y = 1, as we want positive square root.

Answer = sqrt 26.8328157

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If 2x + 3z = 12, and z = -2, then x=6 <br> true or false
zalisa [80]
2x + 3z = 12 <span>and z = -2, then x=6 
</span><span>
2x + 3(-2) = 12
2x = 18
  x = 9

answer

False </span>
4 0
3 years ago
What is the rate of change between the interval x= pi and x= 3pi/2
Romashka [77]

Answer:

\frac{6}{\pi } or 1.9099

Step-by-step explanation:

Look for y values at each of those given values of "x" and apply the slope formula.  When x = pi. y = -1 so the coordinate is (\pi,-1).  When x = 3pi/2, y = 2 so the coordinate is (\frac{3\pi }{2},2)

Plug those values into the slope formula:

\frac{2-(-1)}{\frac{3\pi }{2}-\pi}

You need a common denominator of pi:

\frac{3}{\frac{3\pi-2\pi}{2} }=\frac{3}{\frac{\pi }{2} }

Do the math on that to get a slope of \frac{6}{\pi } =1.9099

8 0
4 years ago
6. In Diagram 1, NPQRSTUV is a regular octagon. NVW and STW are straight lines.
Sveta_85 [38]

Answer:

  A.  37.5°

Step-by-step explanation:

∠SPT can be considered an inscribed angle in the circumcircle. In that circle, arc ST would have a measure of 360°/8 = 45°. Angle y° is half that measure, so is 22.5°.

The external angles of a regular octagon are 360°/8 = 45°, so that is the measure of angles UTW and UVW. It is also the amount by which reflex angle TUV exceeds 180°.

The sum of the interior angles of quadrilateral TUVW is ...

  45° +225° +45° +3x° = 360°

Then 3x° = 45° and x° = 15°.

Then the sum of interest is ...

  x° + y° = 15° + 22.5° = 37.5°

3 0
3 years ago
Factor the expression x2 + 4x − 12.
mrs_skeptik [129]

Answer:

(x-2) (x+6)

Step-by-step explanation:

8 0
4 years ago
Which of the following equations was used to graph the line shown B).y=x÷2 D).y=x+2​
amid [387]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
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