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Sunny_sXe [5.5K]

3 years ago

14

A bit hard for me !!!!!

2 answers:

nataly862011 [7]3 years ago

8 0

The solution is where the lines cross or intersect. The point the lines intersect is (-1,2). As you can see, they are crossing.

I hope this helps!
~cupcake

Annette [7]3 years ago

4 0

Where they intersect is (-1,2) hope this helps

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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.

3 0

3 years ago

4.7x + 15.3x + 10.4 - 8.4

katrin2010 [14]

Answer:

10⋅(10x+1)

5

Hope this helps!

7 0

3 years ago

First answer gets brainliest. You do not need to do the graphing or the shading, just pls tell me the inequalities

Aleksandr-060686 [28]

Answer:

y $\geq 20-x$

$y\geq 40-5x$

Step-by-step explanation:

8 nickels = 40 cents

y < 8

x < 35

Let's test

1 nickel and 35 pennies. That doesn't work

4 nickel and 20 pennies. That works. Perhaps we be more precise?

5 nickels and 15 pennies. Right on the point. 20 coins.

Hope this helps :)

Have a nice day!

4 0

3 years ago

Rewrite 3log(4) in the form log(c)

grandymaker [24]

Step-by-step explanation:

this is the answer of this question

4 0

3 years ago

Se considera numerele naturale x=4 si y=6. scrieti raportul numerelor x si y

dimaraw [331]

Answer:

x/y = 4/6 = 2/3

Step-by-step explanation:

4 0

3 years ago