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2 years ago

30 divide by 2438 long division

Mathematics

1 answer:

Phoenix [80]2 years ago

6 0

Answer:

81 r8

The picture explains how I got the answer

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Purchased a book rs 500 sold 20%profit find its actual profit and sel<br>ling price

umka2103 [35]

Answer:

Selling price=rs.600.

Profit of rs=100.

Step-by-step explanation:

C.P=500; profit%=20%

S.P.=100+profit%×C.P/100

S.P=120×500/100

=rs.600

S.P>C.P

Profit S.P-C.P

600-500=100

he gained for rs.100.

7 0

2 years ago

For a binomial process, the probability of success is 40 percent and the number of trials is 5. Find the standard deviation.

Yakvenalex [24]

Answer:

$Sd(X) =\sqrt{1.2}=1.095$

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:

$X \sim Binom(n=5, p=0.4)$

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:

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

The mean for the binomial distribution is given by:

$E(X) =np=5*0.4=2$

And the variance is given by:

$Var(X) = np(1-p) =5*0.4*(1-0.4)=1.2$

And the deviation is just the square root of the variance so we got:

$Sd(X) =\sqrt{1.2}=1.095$

7 0

2 years ago

Mr. palmer does an experiment to investigate the effects of distractions on studying and learning. he gives each participant a l

slamgirl [31]

According to the line of best fit, the number of words a person would remember after being distracted by 7 words will be 5 words. Option B. This is further explained below.

<h3>What is an experiment?</h3>

Generally, an experiment is simply a scientific technique used to produce a discovery, test a hypothesis, or show a previously unknown fact.

In conclusion, the experiment shows that according to the line of best fit 5words will be remembered after being distracted.

Read more about experiment

brainly.com/question/15402972

#SPJ4

8 0

1 year ago

27^x = 9^x − 4 Question 1 options: x = 8 x = 4 x = −4 x = −8

Mariulka [41]

Answer:

x = -8