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Volgvan
3 years ago
9

What is the sum of the first 27 terms of the following sequence?

Mathematics
1 answer:
FromTheMoon [43]3 years ago
5 0
Answer choices............................
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Help will give brainiest
Fynjy0 [20]

Answer:

n=R

Step-by-step explanation:

f(n)=9n+1

4 0
3 years ago
Are your finances, buying habits, medical records, and phone calls really private? A real concern for many adults is that comput
Andrej [43]

Answer:

a)There is a 4.88% probability that none is concerned that employers are monitoring phone calls.

b)There is a 7.89% probability that all are concerned that employers are monitoring phone calls.

c)There is a 37.23% probability that exactly two are concerned that employers are monitoring phone calls.

Step-by-step explanation:

The binomial probability is the probability of exactly x successes on n repeated trials in an experiment which has two possible outcomes (commonly called a binomial experiment).

It is given by the following formula:

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

In which C_{n,x} is the number of different combinatios 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 a success.

In this problem, a success is being concerned that employers are monitoring phone calls.

53% of adults are concerned that employers are monitoring phone calls, so p = 0.53

(a) Out of four adults, none is concerned that employers are monitoring phone calls.

Four adults, so n = 4.

Is the probability of 0 successes, so x = 0.

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

P = C_{4,0}.(0.53)^{0}.(0.47)^{4}

P = 0.0488

There is a 4.88% probability that none is concerned that employers are monitoring phone calls.

(b) Out of four adults, all are concerned that employers are monitoring phone calls.

Four adults, so n = 4.

Is the probability of 4 successes, so x = 4.

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

P = C_{4,0}.(0.53)^{4}.(0.47)^{0}

P = 0.0789

There is a 7.89% probability that all are concerned that employers are monitoring phone calls.

(c) Out of four adults, exactly two are concerned that employers are monitoring phone calls.

Four adults, so n = 4.

Is the probability of 4 successes, so x = 2.

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

P = C_{4,2}.(0.53)^{2}.(0.47)^{2}

P = 0.3723

There is a 37.23% probability that exactly two are concerned that employers are monitoring phone calls.

3 0
2 years ago
SOMEONE HELP ME ASAP I will give BRAINLIEST
DedPeter [7]
6.\\-6(a-7)=(-6)(a)+(-6)(-7)=-6a+42\\\\distributive\ property:\ a(b\pm c)=ab\pm ac


7.\\The \formula of\ slope:\\\\m=\dfrac{y_2-y_1}{x_2-x_1}

We\ have:\\\\(3;\ 4);\ (-6;\ 10)\\\\m=\dfrac{10-4}{-6-3}=\dfrac{6}{-9}=-\dfrac{2}{3}

Answer:\ m=-\dfrac{2}{3}
8 0
3 years ago
Solve 3(2x-5)-4x+8=-1
777dan777 [17]

Answer:

6

Step-by-step explanation:

Step 1:

3 ( 2x - 5 ) - 4x + 8 = - 1

Step 2:

5x - 15 - 4x + 8 = - 1

Step 3:

x - 15 + 8 = - 1

Step 4:

x - 7 = - 1

Answer:

x = 6

Hope This Helps :)

7 0
3 years ago
What's -26.3 plus -12.6
lys-0071 [83]
Your answer would be -38.9 hope that helped
6 0
2 years ago
Read 2 more answers
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