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3 years ago

13

and oil storage tank is a cylinder with a height of 50 feet in a diameter of 20 feet. What is the volume of the tank? Use 3.14 f

or pie

2 answers:

anyanavicka [17]3 years ago

4 0

Answer: 7850 ft

Step-by-step explanation:

Alborosie3 years ago

4 0

Answer:

15700

Step-by-step explanation:

V=πr²h

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A stand at a farmer's market sells different types of apples, as shown in the table.

son4ous [18]

Answer:

Step-by-step explanation:

Apple B Cost

6 0

2 years ago

The hourly median power (in decibels) of received radio signals transmitted between two cities

trasher [3.6K]

Using the lognormal and the binomial distributions, it is found that:

The 90th percentile of this distribution is of 136 dB.

There is a 0.9147 = 91.47% probability that received power for one of these radio signals is less than 150 decibels.

There is a 0.0065 = 0.65% probability that for 6 of these signals, the received power is less than 150 decibels.

In a <em>lognormal </em>distribution with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{\ln{X} - \mu}{\sigma}$

It measures how many standard deviations the measure is from the mean.

After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.

In this problem:

The mean is of $\mu = 3.5$ .

The standard deviation is of $\sigma = \sqrt{1.22}$

Question 1:

The 90th percentile is X when Z has a p-value of 0.9, hence <u>X when Z = 1.28.</u>

$Z = \frac{\ln{X} - \mu}{\sigma}$

$1.28 = \frac{\ln{X} - 3.5}{\sqrt{1.22}}$

$\ln{X} - 3.5 = 1.28\sqrt{1.22}$

$\ln{X} = 1.28\sqrt{1.22} + 3.5$

$e^{\ln{X}} = e^{1.28\sqrt{1.22} + 3.5}$

$X = 136$

The 90th percentile of this distribution is of 136 dB.

Question 2:

The probability is the <u>p-value of Z when X = 150</u>, hence:

$Z = \frac{\ln{X} - \mu}{\sigma}$

$Z = \frac{\ln{150} - 3.5}{\sqrt{1.22}}$

$Z = 1.37$

$Z = 1.37$ has a p-value of 0.9147.

There is a 0.9147 = 91.47% probability that received power for one of these radio signals is less than 150 decibels.

Question 3:

10 signals, hence, the binomial distribution is used.

Binomial probability distribution

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$C_{n,x} = \frac{n!}{x!(n-x)!}$

The parameters are:

x is the number of successes.

n is the number of trials.

p is the probability of a success on a single trial.

For this problem, we have that $p = 0.9147, n = 10$ , and we want to find P(X = 6), then:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 6) = C_{10,6}.(0.9147)^{6}.(0.0853)^{4} = 0.0065$

There is a 0.0065 = 0.65% probability that for 6 of these signals, the received power is less than 150 decibels.

You can learn more about the binomial distribution at brainly.com/question/24863377

5 0

2 years ago

A number, x, rounded to 2 significant figures is 1300<br>Write down the error interval for x.

nikitadnepr [17]

Answer:

$[1250,1350)$ .

Step-by-step explanation:

It is given that a number, x, rounded to 2 significant figures is 1300.

It is possible if,

1. The value of x is greater than of equal to 1250 and less than or equal to 1300.

i.e., $1250\leq x\leq 1300$ ...(1)

2. The value of x is greater than of equal to 1300 and less than 1350.

i.e., $1300\leq x$ ...(2)

On combining (1) and (2), we get

$1250\leq x < 1350$

1350 is not included in the error interval for x.

Interval notation is $[1250,1350)$ .

Therefore, the error interval for x is $[1250,1350)$ .

7 0

3 years ago

]HI THIS MY FAV SONG WHTS URS? WILL GIVE BRAINLIEST

Amiraneli [1.4K]

My favorite song is Make a Wish by NCT U

[Intro]

Oh, ayy

Oh, yeah

[Verse 1]

See you looking right here, don't hesitate (Yeah)

Fully booked up for you, I squeeze in a date (Yeah)

Girl, you got me excited, I wanna play (Ooh)

It’s like I been at sea, the way I been on a wave

(Ayy, ayy, ayy, ayy)

I want you to come join me (Join me)

Swimmin' in the money like royalty

She said, "Baby, you don't have to spoil me"

She just want me to spoil her with loyalty

[Refrain]

Sweet tooth, I eat all of the Skittles

I like my donuts with jam in the middle

You’re a great example of what I'm into

I was thinking we could jam for a little, yeah

[Pre-Chorus]

You'rе all that I want

Let me show what I'm on

[Chorus]

I can do this all night

Back it up, back it up (Yeah)

Yеah, girl, you just my type (Woo)

We should match it up, match it up (We should)

Girl, you're lit, there ain't no one finer

One in a milli', yeah, you light the fire

Before I change my mind

It's your birthday, make a wish

[Post-Chorus]

Ooh, you should make a wish

I’ll, I’ll give you anything (Haha), make a wish

Let me do it for you

[Verse 2]

Never take a break, you always workin' overtime

Let’s just run away (Away), memories to make (To make)

You a diamond, see you glowin' in the (Dark)

That's why it's funny when you’re calling me a (Star)

You're my sugar rush, you really got me (Charged)

Really got me charged, you star

[Refrain]

Sweet tooth, I know how to nibble

Ice cream, no flake, lemon drizzle

Chocolate milkshake, just a little

Oreo marshmallow with the sprinkles

[Pre-Chorus]

You're all that I want

Let me show what I'm on

[Chorus]

I can do this all night

Back it up, back it up (Back it up on me)

Yeah, girl, you just my type

We should match it up, match it up (We should)

Girl, you're lit, there ain't no one finer

One in a milli', yeah, you light the fire

Before I change my mind

It's your birthday, make a wish

[Bridge]

Girl, your energy, it lifts me high (Lifts me high)

Put my heart and pride on the line (I'll do it for you)

I don't know why it took so long to realize

I should've seen it from before

Been tryna tell you you're

It's your birthday, it's your birthday

It's your birthday, it's your birthday

Now make a wish

[Breakdown]

I can do this all night

(I can do it, got the cash

You know I like to splash

So throw in a bag)

Oh, oh, oh, that I want

It's your birthday, it's your birthday

It's your birthday, it's your birthday

Now make a wish

Girl, you're lit, there ain't no one finer

One in a milli', yeah, you light the fire (Ooh)

Before I change my mind

It's your birthday, make a wish

[Chorus]

I can do this all night

Back it up, back it up

Yeah, girl, you just my type

We should match it up, match it up (We should)

Girl, you're lit, there ain't no one finer

One in a milli', yeah, you light the fire

Before I change my mind (Yeah)

It's your birthday, make a wish

[Outro]

Yeah, make a wish

(It's your birthday, it's your)

Make a wish

(I'll give you birthday cake)

Make a wish (Yeah)

I can do this all night

Make a wish

It's your birthday

It's your birthday

It's your birthday

It's your birthday

Now make a wish

5 0

2 years ago

Read 2 more answers

795.800.913.789

yulyashka [42]

Answer:

seven hundred ninety-five billion eight hundred million nine hundred thirteen thousand seven hundred eighty-nine

4 0

2 years ago