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3 years ago

Зcx + cx = 7 solve for x if c represents a consonant

Mathematics

1 answer:

nika2105 [10]3 years ago

4 0

Answer:

$c=\frac{7}{4x}$

Step-by-step explanation:

Divide both sides by 4x

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Suppose in the University of Manitoba, 40% of the students live in apartments. If 600 students are randomly selected, then the a

just olya [345]

Answer:

$P(200\leq X\leq 400)=P(\frac{200-240}{12}\leq \frac{X-\mu}{\sigma}\leq \frac{400-240}{12})=P(-3.33\leq Z \leq 13.33)$

$=P(Z$

So then the correct answer would be:

B) .9996

Step-by-step explanation:

The exact way to solve this problem is using the binomial distribution, assuming that our random variable of interest is "number of students living in apartments" represented by X and $X \sim Bin(n=600, p =0.4)$

And we want this probability:

$P(200 \leq X \leq 400) [tex]In order to find this probability we can use the foloowing excel code:"=BINOM.DIST(400,600,0.4,TRUE)-BINOM.DIST(199,600,0.4,TRUE)"And we got:[tex] P(200 \leq X \leq 400) =0.999675[tex]But for this case the problem says that we need to approximate, so then we can use the normal approximation to the normal distribution. We need to check the conditions in order to use the normal approximation.
[tex]np=600*0.4=240\geq 10$

$n(1-p)=600*(1-0.4)=360 \geq 10$

So we see that we satisfy the conditions and then we can apply the approximation.

If we appply the approximation the new mean and standard deviation are:

$E(X)=np=600*0.4=240$

$\sigma=\sqrt{np(1-p)}=\sqrt{600*0.4(1-0.4)}=12$

And then $X \sim N (\mu = 240, \sigma= 12)$

And we are interested on the following probability:

$P(200\leq X\leq 400)=P(\frac{200-240}{12}\leq \frac{X-\mu}{\sigma}\leq \frac{400-240}{12})=P(-3.33\leq Z \leq 13.33)$

$=P(Z$

So then the correct answer would be:

B) .9996

6 0

3 years ago

Please help!!! ASAP ITS A QUIZ

Wewaii [24]

Answer:

600

3-4 months

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

X + y = 6

pantera1 [17]

X+y=6
2x+y=4
solve the both
x+y=6
- (2x+y=4)
-x = 2
x=-2
substitute the value of x in x+y=6
-2+y=6
y=6+2
y=8
therefore the answer is (-2,8)

4 0

2 years ago

4(y+6)+5y this irritating

Alla [95]

I'm guessing you have to simplify this?
You distribute 4 to whatever is in the parenthesis.

So
4•y=4y
4•6=24
And of course there's the 5y that stays the same.

You get 4y+24+5y
Which simplifies to 9y+24 because you can group the 4y and 5y together.

In the end, you get 9y+24.

4 0

2 years ago

How do you graph these???

Advocard [28]

This is # 22. And the second picture would be # 23

3 0

3 years ago