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Marina86 [1]
2 years ago
14

This is had can you help me

Mathematics
1 answer:
Likurg_2 [28]2 years ago
7 0

Answer:

#9 is 6 #10 is 1 #11 is 7 #12 is 6

Step-by-step explanation:

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Vesna [10]

Answer: the answer is

(-2,0)

(0,2)

4 0
3 years ago
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In a random sample of 45 newborn babies, what is the probability that 40% or fewer of the sample are boys. (Use 3 decimal places
erastova [34]

Answer:

z= \frac{p- \mu_p}{\sigma_p}

And the z score for 0.4 is

z = \frac{0.4-0.4}{\sigma_p} = 0

And then the probability desired would be:

P(p

Step-by-step explanation:

The normal approximation for this case is satisfied since the value for p is near to 0.5 and the sample size is large enough, and we have:

np = 45*0.4= 18 >10

n(1-p) = 45*0.6= 27 >10

For this case we can assume that the population proportion have the following distribution  

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Where:

\mu_{p}= \hat p = 0.4

\sigma_p = \sqrt{\frac{p(1-p)}(n} =\sqrt{\frac{0.4(1-0.4)}(45}= 0.0703

And we want to find this probability:

P(p

And we can use the z score formula given by:

z= \frac{p- \mu_p}{\sigma_p}

And the z score for 0.4 is

z = \frac{0.4-0.4}{\sigma_p} = 0

And then the probability desired would be:

P(p

7 0
3 years ago
Read 2 more answers
F(x)=ln x<br> g(x)=-5ln x<br> ???????????
murzikaleks [220]

Answer:

I believe you have selected all the correct answers, just give me a few seconds to make sure.

4 0
3 years ago
Find angle E if angle E and angle F are supplementary, angle E= 2x + 5 and angle F= 5x - 38
Bingel [31]

Answer:

About 65.86 degrees

Step-by-step explanation:

A supplementary angle means that the angles add to 180 degrees.

Angle E + Angle F = 180 degrees.

You can then plug in the given equations for E and F.

2x + 5   +   5x - 38   = 180

Combine like terms:

2x + 5x = 7x

5 - 38 = -33

New equation: 7x-33=180

Remove the -33 from the left side of the equation by adding 33 to each side

7x-33+33 = 180+33   --->   7x = 213

Divide by 7 on each side

7x/7 = 213/7  --->   x = about 30.43

You can then plug this into your equation for E and solve

2(30.43) + 5 = 65.86 Degrees

4 0
3 years ago
Which answer shows three ways to write 2/3 as a ratio?
Arada [10]
2/3 can also be written as 2:3 or 4:6 or 4/6…8:12…8/12…
7 0
3 years ago
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