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3 years ago

Find the values of m and n that make equation true. 8+15i=2m+3ni

Mathematics

1 answer:

Brilliant_brown [7]3 years ago

8 0

gthy67jntgrt67u89i7yu holfcedikjnhfnhtfrolwsfr n/lkjhfwr3n oljfu vikr8hneikoeOPDTE85417

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SEE QUESTION IN IMAGE

Pavel [41]

Answer:

5, 6, 7

(5 + 6 + 7)/3 = 6

<u>Standard deviation:</u>

σ = $\sqrt{((5 - 6)^2+(6-6)^2+(7-6)^2)/3} = \sqrt{2/3}$

Correct choice is d

-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5

(-5 -4 - 3 - 2 - 1 + 0 + 1 + 2 + 3 + 4 + 5)/11 = 0

<u>Standard deviation:</u>

σ = $\sqrt{((-5)^2+(-4)^2+(-3)^2+(-2)^2+(-1)^2+0^2+1^2+2^2+3^2+4^2+5^2)/11} = \sqrt{10}$

Correct choice is d

3, 4, 5, 6, 7

<u>Standard deviation:</u>

σ = $\sqrt{((3-5)^2+(4-5)^2+(5-5)^2+(6-5)^2+(7-5)^2)/5} = \sqrt{2}$ ≈ 1.4

Correct choice is d

5 0

3 years ago

A triangle ABC is drawn to circumscribe a circle and AD=6cm,DB=4cm and CF=3cm then find perimeter of triangle ABC

sertanlavr [38]

Answer:

26 cm

Step-by-step explanation:

I am trying to post the full solution of the question.. But it displays a message:

RUDE!! WE DON'T USE SUCH WORDS

PLEASE CHANGE IT!!

I was just posting the solution and no wrong word.

5 0

3 years ago

Read 2 more answers

1) Q: A: Factor x2 + 8x + 16 A) (x + 4)2 B) (x - 4)2 C) (x + 8)(x + 2) D) (x + 2)(x - 8)

luda_lava [24]

Answer:

(x+4)^2 Choice A

Step-by-step explanation:

x^2 + 8x + 16

what 2 numbers multiply together to give you 16 and add together to give you 8

1*16 = 16 1+16 = 17 no

2*8 = 16 2+8 = 10 no

4*4 = 16 4+4 = 8 yes

(x+4) (x+4)

(x+4)^2

8 0

3 years ago

The standard IQ test is designed so that the mean is 100100 and the standard deviation is 1515 for the population of all adults.

Natalija [7]

Answer:

The sample size should be approximately 151.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 100

Population standard deviation, σ = 15

We have to evaluate the sample size, n.

Alpha, α = 0.10

Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.10} = \pm 1.64$

$100 \pm 1.64(\frac{15}{\sqrt{n}} ) = (98,102)$

$100 \pm 1.64(\displaystyle\frac{15}{\sqrt{n}} ) = (98,102)\\\\1.64(\frac{15}{\sqrt{n}} ) = 2\\\\n = 151.29 \approx 151$

Thus, the sample size should be approximately 151.

6 0

3 years ago

What's the awnswer to 10 divided by 2/7?

Dvinal [7]

34.48

(2/7=.29, 10/.29=34.48)

4 0

3 years ago