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Lana71 [14]
3 years ago
7

[20pts] A service facility charges a $20 fixed fee plus $25 per hour of service up to 6 hours, and no additional fee is charged

for a service visit exceeding 6 hours. Suppose (for now) that the service time τ is equally likely to be any time in [0, 10] hours. (Note that τ is a continuous random variable.) Let X represent the cost of service in the facility. We would like to set up the probability density function (PDF) and the cumulative distribution function (CDF), then use them to analyze service fees.

Mathematics
1 answer:
irga5000 [103]3 years ago
6 0

Answer:

Step-by-step explanation:

The function of a continuous random variable, whose integral over an interval provides the likelihood that the value of the variable is just inside the same interval while The cumulative distribution function (FX) provides the possibility that the random variable X is not up to or equal to a particular amount x. the formula for calculating it is: Summing the values for every one of the outcomes less than or equal to x will give the solution.

The step by step explanation to this question are in the athached images below

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What value of b will make the expressions −12.8x+b and −3.2(4x−2.1)+2.4 equivalent?
telo118 [61]

- 12.8x + b =  - 3.2(4x - 2.1) + 2.4

Distribute -3.2 through the parentheses

- 12.8x + b =  - 12.8x + 6.72 + 2.4

Cancel equal terms on both sides of the equation

b = 6.72 + 2.4

Add the decimals

b = 9.12

<em>Thus, The expression are equivalent at b = 9.12...~</em>

3 0
3 years ago
What is the expanded form for 1.67822
aalyn [17]
1 + 6/10 + 7/100 + 8/1000 + 2/10000 + 2/100000
6 0
3 years ago
Please help me with this
aleksandr82 [10.1K]

Answer:

B.  $19

Step-by-step explanation:

Approximate prices:

1/4 lb ham = 0.25 * $6 = $1.50

1 1/2 lb turkey = 1.5 * $5 = $7.50

1 lb roast beef = $7

3/4 lb bologna = 0.75 * $4 = $3

Add the approximate individual prices:

$1.50 + $7.50 + $7 + $3 = $19

3 0
3 years ago
Help ASAP pleaseeee. I will give brainliest!!
DIA [1.3K]

Unfortunately it is not 6. you use the counting principle to determine how many possible outcomes there would be, so by exponentially multiplying 3 and 4, we get 81. there are 81 possible outcomes.

Equation:

3^4=81

8 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=-x%5E%7B2%7D%20%2B7x-10%3Do%5C%5C" id="TexFormula1" title="-x^{2} +7x-10=o\\" alt="-x^{2} +7x-
skad [1K]

Answer:

Step-by-step explanation: Answer

5.0/5

1

author link

tereso536

Ambitious

17 answers

723 people helped

Answer:

The Product Sum method of factoring we use on trinomials (ax2+bx+c) with the value of a=1. This is the method that is probably used the most.

example: x2+7x+12 The product is the a value times the c value. In this case 12.

The sum is the b value. In this case 7.

Find the two numbers that multiply to 12 (the product) andadd to 7 (the sum). +4 and +3

These are your two factors. In your two binomials put the x in front and the factors in the back. (x+4)(x+3)

This is your factored expression. To check FOIL back out.

Why does this work???

example:

x2-4x-12

p= -12

s= -4 factors are -6 and +2

so factored answer is (x-6)(x+2)

example:

I'm thinking of a number that could be solved by x2+10x+16=0. What could the number be?

p=16

s=10 factors are +8 and +2

(x+8)(x+2)=0

so either x+8=0 or x+2=0 so either x= -8 or -2 is the

number.

3 0
3 years ago
Read 2 more answers
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