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Fynjy0 [20]
2 years ago
14

Needing some help for my online class thanks

Mathematics
1 answer:
pav-90 [236]2 years ago
7 0

Answer:

y=1/2x+2

Step-by-step explanation:

Know that: y=mx+b

Starting for (0,0) count how many times you go up to the marked line (which is 2)

y=1/2x+2

The [+] 2 is where you would start off at on the graph, with 1/2 being the slope go up one and over two.

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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 <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
Range,median,mode <br> Will give Brainliest!!^^^^
Goshia [24]

Answer:

Mode 25, median 25, Range 7

Step-by-step explanation:

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Help!! I have no idea how to do this. :(
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WILL GIVE BRAINLIEST<br><br><br> Write 2/7x(1.4x^2-3.5y) as a polynomial
olya-2409 [2.1K]

The expression (2/7)x (1.4x² - 3.5y) can be written in the form of a polynomial as 0.4x³ - xy.

<h3>What is polynomial?</h3>

Polynomial is an algebraic expression that consists of variables and coefficients. Variables are called unknown. We can apply arithmetic operations such as addition, subtraction, etc. But not divisible by variable.

The expression is given below

\rm \dfrac{2x}{7} \times (1.4x^2-3.5y)

The expression can be written in the form of the polynomial

\rightarrow \rm \dfrac{2x}{7} \times (1.4x^2-3.5y)\\\\\\\rightarrow \rm \dfrac{2x \times 1.4x^2}{7} - \dfrac{3.5y\times 2x}{7 }\\\\\\\rightarrow \dfrac{2.8x^3}{7} - \dfrac{7xy}{7 }\\\\\\\rightarrow 0.4x^3 - xy

The expression in the form of a polynomial is given as

\rm \rightarrow 0.4x^3 - xy

More about the polynomial link is given below.

brainly.com/question/17822016

#SPJ1

3 0
2 years ago
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