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Nuetrik [128]
3 years ago
13

Help ASAP with an explanation

Mathematics
2 answers:
butalik [34]3 years ago
8 0
It’s B

(I don’t really understand it but I JUST HAD THAT QUESTION on my hw)
Vikki [24]3 years ago
3 0

Answer:

I belive its B

Step-by-step explanation:

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The points (4,t) and (5,
aleksley [76]

Answer:

-3

Step-by-step explanation:

Here is a different example.

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8 0
3 years ago
The pregnancy length in days for a population of new mothers can be approximated by a normal distribution with a mean of days an
solniwko [45]

Answer:

(a) 283 days

(b) 248 days

Step-by-step explanation:

The complete question is:

The pregnancy length in days for a population of new mothers can be approximated by a normal distribution with a mean of 268 days and a standard deviation of 12 days. ​(a) What is the minimum pregnancy length that can be in the top 11​% of pregnancy​ lengths? ​(b) What is the maximum pregnancy length that can be in the bottom ​5% of pregnancy​ lengths?

Solution:

The random variable <em>X</em> can be defined as the pregnancy length in days.

Then, from the provided information X\sim N(\mu=268, \sigma^{2}=12^{2}).

(a)

The minimum pregnancy length that can be in the top 11​% of pregnancy​ lengths implies that:

P (X > x) = 0.11

⇒ P (Z > z) = 0.11

⇒ <em>z</em> = 1.23

Compute the value of <em>x</em> as follows:

z=\frac{x-\mu}{\sigma}\\\\1.23=\frac{x-268}{12}\\\\x=268+(12\times 1.23)\\\\x=282.76\\\\x\approx 283

Thus, the minimum pregnancy length that can be in the top 11​% of pregnancy​ lengths is 283 days.

(b)

The maximum pregnancy length that can be in the bottom ​5% of pregnancy​ lengths implies that:

P (X < x) = 0.05

⇒ P (Z < z) = 0.05

⇒ <em>z</em> = -1.645

Compute the value of <em>x</em> as follows:

z=\frac{x-\mu}{\sigma}\\\\-1.645=\frac{x-268}{12}\\\\x=268-(12\times 1.645)\\\\x=248.26\\\\x\approx 248

Thus, the maximum pregnancy length that can be in the bottom ​5% of pregnancy​ lengths is 248 days.

8 0
3 years ago
Find the area of the following figure.
slava [35]
Ok so the formula for this is A=1/2bh lets plug it in.
A=1/2*16*8
A=8*8
A=64 in^2
8 0
3 years ago
Read 2 more answers
How do you solve the equation k/90-1/9=1/90
Mariulka [41]

Answer:

k = 11

Step-by-step explanation:

k/90 - 1/9 = 1/90

k/90 = 1/90 + 1/9

k/90 = 1 + 10/90

k/90 = 11/90

k = 11/90 / 90

k = 11/90 * 90

k = 11

3 0
3 years ago
Read 2 more answers
Which of the following words help define the national Identity of the United States? Select all that apply.
VikaD [51]
Education and diversity because they both help people
8 0
2 years ago
Read 2 more answers
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