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maxonik [38]
4 years ago
12

He 25 members of the Reading Club are buying a book to discuss at the next meeting. The club leader got a special price; the boo

k will cost $8.14 for each person. How much will the 25 books cost?
Mathematics
1 answer:
Fiesta28 [93]4 years ago
6 0
$203.50, because 8.14 times 25 is 203.5
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Nataly [62]

Answer:

5

Step-by-step explanation:

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FINDING THE NUMBER OF REAL AND NONREAL SOLUTIONS ( EDGE 2022 )
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By graphing the function, we can see that we have 3 real solutions and 2 non-real solutions.

<h3>How many real and nonreal solutions does the equation have?</h3>

To check this, we need to graph the equation and see how many times it intersects the x-axis.

Because the degree is 5, we know that there are 5 solutions in total.

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2 years ago
The radius of a circle is 11 millimeters. What is the circle's circumference?
kherson [118]

Answer:

C≈69.12

Step-by-step explanation:

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2 years ago
Help me please I will give you brainliest btw I need this asap
Yuki888 [10]
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3 0
4 years ago
According to Harper's Index, 40% of all federal inmates are serving time for drug dealing. A random sample of 20 federal inmates
loris [4]

Answer:

(a) P(X≥10) = 0.245

(b) P(X≤5) = 0.125

(c) The expected number of inmates who are serving time for drug dealing is 8.

Step-by-step explanation:

We will use the binomial distribution to solve this problem. Let X be the number of federal inmates who are serving time for drug dealing. We will use the binomial probability formula:

P(X=x) = ⁿCₓ pˣ qⁿ⁻ˣ

where n = total number of federal inmates

           x = no. of federal inmates who serve time for drug dealing

           p = probability that a federal inmate is serving time for drug dealing

           q = probability that a federal inmate is not serving time for drug dealing

(a) P(X≥10) = 1 - P(X<10)

                 = 1 - [P(X=0) + P(X=1) + P(X=2) + P(X=3) + P(X=4) + P(X=5) + P(X=6) + P(X=7) + P(X=8) + P(X=9)]

                = 1 - [²⁰C₀(0.4)⁰(0.6)²⁰⁻⁰ + ²⁰C₁(0.4)¹(0.6)²⁰⁻¹ + ²⁰C₂(0.4)²(0.6)²⁰⁻² + ²⁰C₃(0.4)³(0.6)²⁰⁻³ + ²⁰C₄(0.4)⁴(0.6)²⁰⁻⁴ + ²⁰C₅(0.4)⁵(0.6)²⁰⁻⁵ + ²⁰C₆(0.4)⁶(0.6)²⁰⁻⁶ + ²⁰C₇(0.4)⁷(0.6)²⁰⁻⁷ + ²⁰C₈(0.4)⁸(0.6)²⁰⁻⁸ + ²⁰C₉(0.4)⁹(0.6)²⁰⁻⁹

                 = 1 - (0.000036 + 0.00048 + 0.00308 + 0.0123 + 0.0349 + 0.0746 + 0.1244 + 0.1658 + 0.1797 + 0.1597)

                 = 1 - 0.7549

P(X≥10) = 0.245

(b) P(X≤5) = P(X=0) + P(X=1) + P(X=2) + P(X=3) + P(X=4) + P(X=5)

since we have calculated these values in the previous part, we will simply plug them in here and then add them up.

P(X≤5) = 0.000036 + 0.00048 + 0.00308 + 0.0123 + 0.0349 + 0.0746

P(X≤5) = 0.125

(c) For a binomial distribution, the expected value can be calculated as:

μ = np

  = (20)(0.4)

μ = 8

The expected number of inmates who are serving time for drug dealing is 8.

7 0
3 years ago
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