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3 years ago

To multiply or divide a number by 10,000, how many places should you move the decimal point?

Mathematics

2 answers:

vodka [1.7K]3 years ago

5 0

Answer:

The answer is A. Four.

Good luck :)

zhannawk [14.2K]3 years ago

4 0

Answer:

Step-by-step explanation:

In place value, you would move the decimal point 4 places. You move it 4 places because 10,000 has 4 zeroes.

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4 years ago

Read 2 more answers

A bag contains 5 balls: 3 blue, 1 red, and 1 yellow. You select a ball at random 4 times, replacing the ball after each selectio

serg [7]

Answer:

$P(X=3)$

And replacing we got:

$P(X=3)=(4C3)(0.3)^3 (1-0.3)^{4-3}=0.0756$

Step-by-step explanation:

Let X the random variable of interest "number of times that we select a blue ball", on this case we now that:

$X \sim Binom(n=4, p=3/10)$

The probability is always the same since we replace the ball selected in each trial.

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:

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

And we want to find this probability:

$P(X=3)$

And replacing we got:

$P(X=3)=(4C3)(0.3)^3 (1-0.3)^{4-3}=0.0756$

6 0

4 years ago