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Lorico [155]
3 years ago
9

What is the greatest perfect square that is a factor 1890

Mathematics
2 answers:
sergeinik [125]3 years ago
8 0
Sorry I’m not sure I understand
trasher [3.6K]3 years ago
6 0

Answer:

9

Step-by-step explanation:

2|1890

 --------

3|945

  ------

3|315

 ------

3|105

 ------

5|35

 -----

   7

1890=2×3×3×3×5×7

Greatest perfect square=3×3=9

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The correct choice is B 
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What is the name for numbers that are greater than zero
grigory [225]

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Those that are less than zero are called negative numbers.

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3 years ago
In the Ardmore Hotel, 20 percent of the guests (the historical percentage) pay by American Express credit card. (a) What is the
xxMikexx [17]

Answer:

(a) The expected number of guests until the next one pays by American Express credit card is 4.

(b) The probability that the first guest to use an American Express is within the first 10 to checkout is 0.0215.

Step-by-step explanation:

The random variable <em>X</em> can be defined as the number of guests until the next one pays by American Express credit card

The probability that a guest paying by American Express credit card is, <em>p</em> = 0.20.

The random variable <em>X</em> follows a Geometric distribution since it is defined as the number of trials before the first success.

The probability mass function of <em>X</em> is:

P(X=x)=(1-p)^{x}p;\ x=0,1,2,3...,\ 0

(a)

The expected value of a Geometric distribution is:

E(X)=\frac{1-p}{p}

Compute the expected number of guests until the next one pays by American Express credit card as follows:

E(X)=\frac{1-p}{p}

         =\frac{1-0.20}{0.20}

         =4

Thus, the expected number of guests until the next one pays by American Express credit card is 4.

(b)

Compute the probability that the first guest to use an American Express is within the first 10 to checkout as follows:

P(X=10)=(1-0.20)^{10}\times0.20

                 =0.1073741824\times 0.20\\=0.02147483648\\\approx0.0215

Thus, the probability that the first guest to use an American Express is within the first 10 to checkout is 0.0215.

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3 years ago
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2 years ago
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Answer:

I can't even find the rational expression

Step-by-step explanation:

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2 years ago
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