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Fittoniya [83]
3 years ago
10

Each friend has a 30% chance to get a musical card. Design a simulation that can be used to estimate the probability that a frie

nd who receives 2 greeting cards will receive at least one musical greeting card
Mathematics
1 answer:
Vanyuwa [196]3 years ago
8 0

Answer:

The probability that a friend who receives 2 greeting cards will receive at least one musical greeting card is 0.3

Step-by-step explanation:

The probability of getting a musical card = P(A) = 30 % or 0.3

Therefore probability of not receiving a plain card = P(A)' = P(B) = 100-30  or 1- 0.3 = 0.7

The probability of receiving at least one musical card when two cards are given is

P(A)×P(A) +P(A)×P(B)-P(B)×P(B) =0.3×0.3+0.3×0.7 = 0.3

The probability of receiving at least one musical card = 0.3

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Whole numbers are _____ integers. . . . .A. always. B. sometimes. C. never
guapka [62]

Whole numbers are sometimes integers.

\boxed{ \ The \ Answer \ is \ B \ }

<h3>Further explanation</h3>
  • The set of natural numbers (also called the set of counting numbers) is denoted by N:  \boxed{ \ N = \{1, 2, 3, ...\} \ }.
  • Natural numbers together with zero called are called whole numbers. The set of whole numbers is denoted by W: \boxed{ \ W = \{0, 1, 2, 3, ... \} \ }.
  • The set of natural numbers are not enough for all the number problems in everyday life. For example, natural numbers cannot be used to write some winter temperatures, since such temperatures may be less than zero i.e., negative numbers.
  • The set of integers are the union of the set of negative numbers with the set of natural numbers  and zero. The set of integers is denoted by Z:  \boxed{ \ Z = \{..., -3, -2, -1, 0, 1, 2, 3, ... \} \ }.
  • The set of negative integers is denoted by Z⁻: \boxed{ \ Z^- = \{ ..., -3, -2, -1 \} \ }.
  • The set of positive integers is denoted by Z⁺: \boxed{ \ Z^+ = \{1, 2, 3, ... \} \ }.
  • The set of non-negative integers are the set of all positive integers together with zero.
  • The set of non-positive integers are the set of all negative integers together with zero.

Conclusion:

Whole numbers are sometimes integers because negative integers are not part of whole numbers. In other words, whole numbers are not fully integers.

----------------------------------

Examples of integers around us:

  • The height of an airplane flight typically between 31,000 and 38,000 feet.
  • Ice melts at 0⁰C.
  • This diver is swimming at -20 m.
<h3>Learn more</h3>
  1. 9 ten thousand divided by 10 in unit form brainly.com/question/4786449
  2. What represents the simplified form of an expression: 5(14 - 2)² ÷ 2 brainly.com/question/1602237
  3. Explanations and an example of a question about the four types of number form brainly.com/question/4725342

Keywords: whole numbers are sometimes integers, always, never, natural, counting, zero, negative integers, positive, the set

7 0
3 years ago
Read 2 more answers
A swimming pool is 15 by 30 feet and 5 ft deep if a gallon of paint can cover 250 square feet how many gallons of paint?
AlekseyPX
You would need 9 gallons of paint.
5 0
3 years ago
What number(s) is between 0.325 and 0.35 in decimal form
Rudiy27
If you add a zero to the ones place to level the numbers out it should look like this 0.325&#10;0.350 and count the numbers from 0.325 to 0.350
7 0
3 years ago
A coin is flipped 25 times, and we would like to know the probability that 15 or more of those flips are heads side up.
Helen [10]

Answer:

Yes, the geometric distribution is appropriate.

Step-by-step explanation:

sorry if im wrong

7 0
3 years ago
Help me please I’m so confused
lesya [120]
12= -12
-1/2= 1/2
.25 =-.25
-27=27
0=0
8 0
3 years ago
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