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3 years ago

If

Mathematics

1 answer:

Arte-miy333 [17]3 years ago

8 0

Answer:ddddd

Step-by-step explanation:

ddddddd

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NEED HELP URGENTLY!!!!!

Svet_ta [14]

substitute each point into the inequality and check validity of solution

A (4, 4)

4 ≤ 16 - 12 + 2 ⇒ 4 ≤ 6 → True hence valid solution

B (3, 3 )

3 ≤ 9 - 9 + 2 ⇒ 3 ≤ 2 → False hence not valid

C (1, 1 )

1 ≤ 1 - 3 + 2 ⇒ 1 ≤ 0 → False hence not valid

D (2, 2 )

2 ≤ 4 - 6 + 2 ⇒ 2 ≤ 0 → False hence not valid

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4 years ago

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Help me please I need it done in 20 minutes

sukhopar [10]

Answer:

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3 years ago

Enter an inequality that represents the description, and then solve.

natta225 [31]

Answer:

X >= 7

Step-by-step explanation:

7x + 8 >= 57

7x >= 57-8

7x >= 49

x >= 49/7

x >= 7

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3 years ago

Whats the square root of pi

Rufina [12.5K]

1.772453850905516027298167...

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3 years ago

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The National Center for Health Statistics (NCHS) reports that 70%70% of U.S. adults aged 6565 and over have ever received a pneu

Marianna [84]

Answer:

11.44% probability that exactly 12 members of the sample received a pneumococcal vaccination.

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they received a pneumococcal vaccination, or they did not. The probability of an adult receiving a pneumococcal vaccination is independent of other adults. 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.

70% of U.S. adults aged 65 and over have ever received a pneumococcal vaccination.

This means that $p = 0.7$

20 adults

This means that $n = 20$

Determine the probability that exactly 12 members of the sample received a pneumococcal vaccination.

This is P(X = 12).

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

$P(X = 12) = C_{20,12}.(0.7)^{12}.(0.3)^{8} = 0.1144$

11.44% probability that exactly 12 members of the sample received a pneumococcal vaccination.

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3 years ago