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saveliy_v [14]
3 years ago
13

What is the approximate solution of the equation x^2+12=0

Mathematics
1 answer:
Serggg [28]3 years ago
6 0

Answer:

x=-2i\sqrt{3} , 2i\sqrt{3}

Step-by-step explanation:

The equation is already set equal to zero, so that is a good start

We then need to get x by itself. To do so we need to subtract 12 from both sides to get x² = -12

Then we need to take the square root of both sides\sqrt{x^{2} } =\sqrt{-12} which gives us x=-2i\sqrt{3} , 2i\sqrt{3}

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You can perform 10 push ups in 25 seconds how many can you do in 2 minutes
Whitepunk [10]

not the GREATEST at math but try 50

6 0
3 years ago
If f(x + 2) = 6x2 + 5x − 8. Find f(6).
Blababa [14]

Answer:

  108

Step-by-step explanation:

We can rewrite f(x+2) to make it easier to evaluate:

  f(x+2) = (6x +5)x -8

Since we want f(6), we want x+2 = 6, or x=4.

  f(6) = (6·4 +5)·4 -8 = 29·4 -8

  f(6) = 108

6 0
3 years ago
What point on the line y=9x+8 is closest to the origin
Marat540 [252]

to find the point, find the location

realize that the shortest line that crosses through the origin and y=9x+8 is perpendicular to y=9x+8

perpendicular lines have slopes that multiply to get -1

y=9x+8 has a slope of 9

9*m=-1, m=-1/9

the slope of the mystery line is -1/9

since it passes through the origin, the y intercept is 0

y=(-1/9)x is the equation of the line from the point to the origin

find the intersection of this line and the original line

set them equal to each other

(-1/9)x=9x+8

multily both sides by 9

-x=81x+72

minus 81 both sides

-82x=72

divide both sides by -82

x=-36/41

find y

y=(-1/9)x

y=(-1/9)(-36/41)

y=4/41

the point is (\frac{-36}{41},\frac{4}{41})

3 0
2 years ago
6.20
Irina-Kira [14]
The statement-10 ⁢-43
7 0
2 years ago
This is my last question by the way
Leni [432]

Part A:

There are 25 blocks for the length, and the length of each is 5.5 inches. 5.5x25=137.5

There are 9 blocks for the height, and each is 2.75 inches. 2.75x9=24.75

Since we're trying to find how much longer the length is to the width, we find the difference. 137.5-24.75=112.75

So part A answer is <em><u>112.75 (or 112¾)</u></em>

Part B:

We know the length is 137.5 and the height is 24.75. To find how many times longer the length is, we need to divide to see how many 24.75 can go into 137.5.

137.5÷24.75=5.55

So the answer to part B is <u><em>5.55. Given the context, the answer would probably be 5, because that's how many entire height can fit.</em></u>

<u><em /></u>

Sorry if it's wrong lol

8 0
3 years ago
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