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3 years ago

How do I show work ? Plz help me

Mathematics

2 answers:

Nata [24]3 years ago

4 0

Draw the shape and if you do that try imagining cutting it in half

nadya68 [22]3 years ago

3 0

A circle because if you cross-section it its like cutting it in half horizontally. So its like seeing it from the top view and you would see a circle.

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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 X 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, p = 0.20.

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

The probability mass function of X 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.

3 0

3 years ago

Need answer asap.thanks

Marrrta [24]

Answer:

$0.46=\frac{23}{50}$

Step-by-step explanation:

To write any decimal as a fraction you divide by 1 and multiply by a number (ranging from 10, 100, 1000 etc.) that will make 0.46 a whole number, this will explain:

Let x = $\frac{0.46}{1}$

10x = $10*\frac{0.46}{1} =\frac{4.6}{10}$

100x = $100*\frac{0.46}{1}=\frac{46}{100}$ this is our perfect fraction, now we simplify later

100x - 10x = $\frac{46}{100} -\frac{4.6}{10}$

90x = $\frac{46}{100} -\frac{4.6}{10} =0$ this is to confirm both fractions are equal

x is the same as $\frac{0.46}{1}$ as $\frac{4.6}{10}$ as $\frac{46}{100}$ but here x = $\frac{46}{100}$ because a fraction has to have no decimals.

So 0.46 is equal any of these values, as a fraction, on the other hand, it's improperly equal to $\frac{46}{100} = \frac{23}{50}$ here I divided by 2 to bring down the proper fraction. (fraction at its simplest form)

6 0

3 years ago

If x is a number which expression represents the statement 4 less than the product of 2 and a number

zhannawk [14.2K]

I think the expression that you need is, 4-(2x). Hope it helps!

3 0

3 years ago

Will someone please answer these questions fast and I will give the brainliest? I really need help and it would be appreciated.

Anika [276]

Hello there,

(1) $7934.37

interest would be $2934.37

(2) $2593.74

interest would be $1593.74

(3) $1469.33

interest would be $469.33

(4) $1296.87

interest would be $796.87

(5) $239.66

interest would be $139.66

(6) $4660.96

interest would be $3660.96

Hope I Helped!

-Char

7 0

3 years ago

Which graph represents the function? f(x)=2x√+1

gogolik [260]

Answer:

the 3rd one

Step-by-step explanation:

I just think

4 0

2 years ago