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4 years ago

D(n) = 3 (-2)-1 What is the 4th term in the sequence?

Mathematics

1 answer:

ahrayia [7]4 years ago

6 0

Answer:

Step-by-step explanation:

-2

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student randomly receive 1 of 4 versions(A, B, C, D) of a math test. What is the probability that at least 3 of the 5 student te

alexdok [17]

Answer:

1.2%

Step-by-step explanation:

We are given that the students receive different versions of the math namely A, B, C and D.

So, the probability that a student receives version A = $\frac{1}{4}$ .

Thus, the probability that the student does not receive version A = $1-\frac{1}{4}$ = $\frac{3}{4}$ .

So, the possibilities that at-least 3 out of 5 students receive version A are,

1) 3 receives version A and 2 does not receive version A

2) 4 receives version A and 1 does not receive version A

3) All 5 students receive version A

Then the probability that at-least 3 out of 5 students receive version A is given by,

$\frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}\times \frac{3}{4}\times \frac{3}{4}$ + $\frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}\times \frac{3}{4}$ + $\frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}\times \frac{1}{4}$

= $(\frac{1}{4})^3\times (\frac{3}{4})^2+(\frac{1}{4})^4\times (\frac{3}{4})+(\frac{1}{4})^5$

= $(\frac{1}{4})^3\times (\frac{3}{4})[\frac{3}{4}+\frac{1}{4}+(\frac{1}{4})^2]$

= $(\frac{3}{4^4})[1+\frac{1}{16}]$

= $(\frac{3}{256})[\frac{17}{16}]$

= 0.01171875 × 1.0625

= 0.01245

Thus, the probability that at least 3 out of 5 students receive version A is 0.0124

So, in percent the probability is 0.0124 × 100 = 1.24%

To the nearest tenth, the required probability is 1.2%.

4 0

3 years ago

Write <br> –1.2 as a mixed number.

Luden [163]

Answer:

-1 1/5

Step-by-step explanation: cause calculator

7 0

4 years ago

He receives $6.00 commission for

sasho [114]

He received 30 dollars in commission

4 0

4 years ago

Read 2 more answers

I need so help on this problem help

Katyanochek1 [597]

Answer:

23=89=46

Step-by-step explanation:

=56

8 0

3 years ago

PLEASE HELP

erastova [34]

Answer: 36 is divisible by 3 2 9 4 6

Step-by-step explanation:

You know a number is divisible by 2 if it is even. You know a number is divisible by 3 if the sum of the digits can be divided by 3. You know what number is divisible by 6 if the number is both divisible by 2 and 3. You know a number is divisible by 4 if the right two digits is divisible by 4 in this case 36. and you know a number is divisible by 9 if the sum of the digits is able to be divided by 9. Hope this helps!

5 0

4 years ago