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icang [17]
2 years ago
12

Whats a integer ,can someone answer this a short explanation ?

Mathematics
2 answers:
Fittoniya [83]2 years ago
5 0

Answer:

It is any whole number including both positive/negative.

Step-by-step explanation:

Ex.-3,-2,-1,0,1,2,3

(also zero can be included)

madreJ [45]2 years ago
3 0

Answer:

An Integer is a whole number

Step-by-step explanation:

Integers can be positive, negative, and even zero.

Integers can't be fractions, decimals, ect.

An example of some Integers are:

1, 2, 3, 0, -1, -2 , -3

Hope this helps you out!

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A student takes an exam containing 1414 multiple choice questions. The probability of choosing a correct answer by knowledgeable
Readme [11.4K]

Answer:

0.0082 = 0.82% probability that he will pass

Step-by-step explanation:

For each question, there are only two possible outcomes. Either the students guesses the correct answer, or he guesses the wrong answer. The probability of guessing the correct answer for a question is independent of other questions. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem we have that:

n = 14, p = 0.3.

If the student makes knowledgeable guesses, what is the probability that he will pass?

He needs to guess at least 9 answers correctly. So

P(X \geq 9) = P(X = 9) + P(X = 10) + P(X = 11) + P(X = 12) + P(X = 13) + P(X = 14)

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 9) = C_{14,9}.(0.3)^{9}.(0.7)^{5} = 0.0066

P(X = 10) = C_{14,10}.(0.3)^{10}.(0.7)^{4} = 0.0014

P(X = 11) = C_{14,11}.(0.3)^{11}.(0.7)^{3} = 0.0002

P(X = 12) = C_{14,12}.(0.3)^{12}.(0.7)^{2} = 0.000024

P(X = 13) = C_{14,13}.(0.3)^{13}.(0.7)^{1} = 0.000002

P(X = 14) = C_{14,14}.(0.3)^{14}.(0.7)^{0} \cong 0

P(X \geq 9) = P(X = 9) + P(X = 10) + P(X = 11) + P(X = 12) + P(X = 13) + P(X = 14) = 0.0066 + 0.0014 + 0.0002 + 0.000024 + 0.000002 = 0.0082

0.0082 = 0.82% probability that he will pass

6 0
2 years ago
angle d is a vertical angle to angle f. The measure of angle d is 53 degrees. What is the measure of angle f?
Marizza181 [45]

Answer:

53 degrees

Step-by-step explanation:

3 0
3 years ago
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Which expression is equivalent to 9a + 12?
Nezavi [6.7K]

Answer: 3a+6a+6+6

Step-by-step explanation:

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3 years ago
A square canvas has an area of 49 square inches. What is the perimeter of the canvas?
a_sh-v [17]

Answer:

Step-by-step explanation:

Area = side*side

side * side = 49

side * side = 7*7

side = 7 inches

Perimeter = 4*side

=4 * 7

= 28 inches

4 0
3 years ago
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If the exterior angle of a regular polygon is 15 degree, find the central angle ?
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Answer: 360/15=24 sides

Step-by-step explanation:

6 0
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