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3 years ago

What does the median tell you

Mathematics

2 answers:

Akimi4 [234]3 years ago

6 0

The median is the the middle.

kvasek [131]3 years ago

3 0

The median tell you how many you have in common.

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Divide (3+2i)/(-4+5i). express answer in standard form

Levart [38]

$\dfrac{3+2i}{-4+5i}=\dfrac{(3+2i)(-4-5i)}{(-4+5i)(-4-5i)}=\dfrac{-12-15i-8i-10i^2}{(-4)^2-(5i)^2}\\\\=\dfrac{-12-23i+10}{16+25}=\dfrac{-2-23i}{41}=-\dfrac{2}{41}-\dfrac{23}{41}i$

8 0

3 years ago

I need help solving systems of linear equations by substitution.

e-lub [12.9K]

Answer:

x = 2 and y = 1

Step-by-step explanation:

4x = 5+3

4x = 8

x = 8/4

x= 2

so substitute the value of x in the second problem

-8(2) + 6y = -10

-16 + 6y = -10

6y= -10 + 16

6y= 6

y= 6/6

y = 1

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4 years ago

Which structure has changed position in whales over a long period of time.

UNO [17]

Answer:

I THINK ITS B. THE DORSAL FIN

Step-by-step explanation:

Because all fish and different Marine animals

have it in different spots of he/she's body

Hope I helped SORRY if you get it wrong

7 0

3 years ago

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Mean birthweight is studied because low birthweight is an indicator of infant mortality. A study of babies in Norway published i

ANEK [815]

Answer: 20

Step-by-step explanation:

Formula to find the minimum sample size(n) when prior population standard deviation $(\sigma)$ is known.

$n=(\dfrac{z^c\times\sigma}{E})^2$ , where E = Margin of error , $z^c$ = Critical z-value for c confidence interval.

Given : E = 225 g , $\sigma=600$ g

Critical z value for 90% confidence = 1.645

Now, $n=(\dfrac{1.645\times600}{225})^2$

$n=(\dfrac{987}{225})^2$

$n=(4.38666666667)^2=19.2428444\approx20$

Hence, the required minimum sample size = 20

7 0

3 years ago

What is 265,409 rounded to the nearest hundred thousand

sweet-ann [11.9K]

The Answer Is 300,000

6 0

3 years ago

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