1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Simora [160]
3 years ago
7

I willl mark brainiest plz answer send right answer get points

Mathematics
2 answers:
kirza4 [7]3 years ago
8 0

Answer: Option D

Step-by-step explanation:

Soup : 15/5 is 3 x 7 is 21

Peanut: 35/7 is 5 x 5 is 25

Ilia_Sergeevich [38]3 years ago
4 0
The answer is D


It is easy
You might be interested in
Hello my friends <br>can u help me out?
lana66690 [7]
X = 5 y = 4
x * y = 20
7 0
3 years ago
Read 2 more answers
USA Today reported that about 20% of all people in the United States are illiterate. Suppose you take eight people at random off
Law Incorporation [45]

Answer:

a) Figure and code attached

b) E(X)=\mu = np = 8*0.2= 1.6

Var(X) =\sigma^2= np(1-p) = 8*0.2*(1-0.2) = 1.28

Sd(X)=\sigma= \sqrt{1.28}= 1.131

c) P(X\geq 7) =0.97

And we can calculate this with the complement rule.

P(X \geq 7) = 1-P(X

So then we have:

P(X \leq 6) = 0.03

And we are interested on the valueof n who satisfy this expression.

And for this we can verify this with the following code:

"=BINOM.DIST(6,E54,0.2,TRUE)"

And as we can see on the second figure attached the value who satisfy the condition would be n = 60.

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest, on this case we now that:

X \sim Binom(n=8, p=0.2)

The probability mass function for the Binomial distribution is given as:

P(X)=(nCx)(p)^x (1-p)^{n-x}

Where (nCx) means combinatory and it's given by this formula:

nCx=\frac{n!}{(n-x)! x!}

Part a

We can use the following R code to generate the histogram for this case:

> x <- seq(0,8,by = 1)

> y <- dbinom(x,8,0.2)

> plot(x,y,type = "h",main="Histogram")

And as we can see we got the result on the figure attached. And the distribution seems to be skewed to the right.

Part b

For this case the expected value is given by:

E(X)=\mu = np = 8*0.2= 1.6

The variance is given by:

Var(X) =\sigma^2= np(1-p) = 8*0.2*(1-0.2) = 1.28

And the standard deviation would be:

Sd(X)=\sigma= \sqrt{1.28}= 1.131

Part c

For this case we have the following inequality:

P(X\geq 7) =0.97

And we can calculate this with the complement rule.

P(X \geq 7) = 1-P(X

So then we have:

P(X \leq 6) = 0.03

And we are interested on the valueof n who satisfy this expression.

And for this we can verify this with the following code:

"=BINOM.DIST(6,E54,0.2,TRUE)"

And as we can see on the second figure attached the value who satisfy the condition would be n = 60.

5 0
3 years ago
x+4y=17 and -x-6y=-23 what's the x and y I really badly need this I need this so I can play at my basketball game tommorw and I
loris [4]

<u>Answer:</u>

  • x = 5
  • y = 3

<u>Solution:</u>

  • => x + 4y = 17

            -x - 6y = -23

  • => -2y = -6
  • => y = 3

<u>Now, let's substitute the value of y into the first equation.</u>

  • x + 4y = 17
  • => x + 4(3) = 17
  • => x + 12 = 17
  • => x = 5

<u>Let's check our answer to make sure it is correct.</u>

<u>Check:</u>

  • -x - 6y = -23
  • => -(5) - 6(3) = -23
  • => -5 - 18 = -23
  • => -23 = -23

Hence, this is proven correct.

Hoped this helped.

BrainiacUser1357

7 0
2 years ago
If x=12 What is the value of the expression2(x)+3
GaryK [48]

Answer:

147

Step-by-step explanation:

2(X)= (X) x (X)

12 x 12 + 3= 144+3=147

7 0
3 years ago
Ava, Natalie, Esraa, and Savannah are all running a race. Each girl finishes at a different time. Ava finishes the race in 12.89
gayaneshka [121]

Natalie

Step-by-step explanation:

Esraa finishes in 12.2 secons making her first.

natalie finishes in 12.34 seconds making her second.

Ava finishes in 12.89 making her third.

and Savannah finishes in 12.988 seconds making her last.

3 0
3 years ago
Other questions:
  • What is 2 and 3/5 plus 5 and 3/5?
    10·2 answers
  • EMERGENCY<br><br> How do I find the axis of symmetry equation based on the graph?
    5·1 answer
  • If you guess an answer on two multiple choice questions with the options a, b, or c, what is the probability of you guessing the
    15·1 answer
  • Q(x)=4-x over (x-4)(x+2)
    14·1 answer
  • Suppose there are two routes from North Point to Boulder Creek, four routes from Boulder Creek to Beaver Dam, four routes from B
    6·1 answer
  • I. EXPRESE LAS SIGUIENTES DIMENSIONES DE LA TIERRA EN NOTACIÓN CIENTÍFICA 1. Diámetro ecuatorial: 12.756.000 m. 2. Circunferenci
    5·1 answer
  • On a number line, the distance between x and 8 is 2 units.
    12·1 answer
  • Can someone please help me and put them in order ?
    13·1 answer
  • The population of a city is estimated to decline according to the model P(t)=197000e^-0.014t, where t is the number of years pre
    11·1 answer
  • In a race, Jason's position was -11 1/5 feet relative to the leader after 1 3/4 minutes. On average, how much did Jason's positi
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!