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2 years ago

What is the square of the imaginary number 3i?

Mathematics

2 answers:

Gwar [14]2 years ago

8 0

Answer:

-9

Step-by-step explanation:

Illusion [34]2 years ago

5 0

−
9
Explanation:
(
3
i
)
2
=
9
i
2
i
2
=
−
1
,
therefore,
9
i
2
=
9
⋅
(
−
1
)
=
−
9

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F(x)+2x^2-4x-3 g(x)=2x^2-16 find f(x)+g(x)

AveGali [126]

F(x) = 2x^2 - 4x - 3
g(x) = 2x^2 - 16

f(x) + g(x)
2x^2 - 4x - 3 + 2x^2 - 16
4x^2 - 4x - 19

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3 years ago

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Olin [163]

Answer:

Step-by-step explanation:

M' = (8,2)

A' = (7,6)

T' = (2,6)

H' =(3,2)

If this is a reflection across the y axis, then all that will change is the x value. You have to read that carefully to make sure you understand it.

Notice that T = (-2,6). All that happens is the the minus becomes a plus.

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3 years ago

In an assembly-line production of industrial robots, gearbox assemblies can be installed in one minute each if holes have been p

slavikrds [6]

Answer: Our required probability is 0.304.

Step-by-step explanation:

Since we have given that

N = 21

Number of improperly drilled holes k = 4

Number of properly drilled holes = N-k= 21-4=17

Let X be the number of improperly drilled holes in a sample of 5.

We will use "Binomial distribution":

$P(X=5)=\dfrac{^4C_0\times ^{17}C_5}{^{21}C_5}=0.304$

So, our required probability is 0.304.

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3 years ago

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hram777 [196]

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3 years ago

Which equation is the BEST fit for the data in the graph? A) y = 8x – 75 B) y = 75x – 8 C) y = -8x + 75 D) y = -75x + 8

vivado [14]

Answer:

Most Likely C) y = -8x + 75

Step-by-step explanation:

The scatter plot shows a negative association, so the line of best fit has a negative slope. The eliminates A and B, since their slopes are positive.
The highest point is (0,75). Because of this, it is safe to assume that would be the best estimate of the y-intercept.
Out best answer is $y=-8x+75$

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3 years ago