All categories

4 years ago

Find the average of: 15, 8, -22, 24, -9, -18, 16

Mathematics

2 answers:

trasher [3.6K]4 years ago

5 0

The average is 2. To find the average you add all the numbers then divide the sum by the total amount of numbers.

White raven [17]4 years ago

3 0

Put the number in order form the smallest to the biggest value. The cross out one in the left and one in the right until you are left with one number.

You might be interested in

HELP PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ

dangina [55]

I’m pretty sure the answer is either D or E but I’m not positive !

7 0

3 years ago

Making a career decision is simple, and it's not necessary to use a process. true or fralse

tino4ka555 [31]

Making a career decision is simple but important task. And a proper process needs to be followed. By a process, we can say choosing the subject interest, finding the career options in your interest area, figuring out the college and the cost of education. And most important working with patience and honesty is the fundamental to reach a zenith in your career.

8 0

4 years ago

Illinois license plates used to consist of either three letters followed by three digits or two letters followed by four digits.

DENIUS [597]

Answer:

The probability that a randomly chosen plate contains the number 2222 is 0.000028 approximately.

The probability that a randomly chosen plate contains the sub-string HI is 0.002548 approximately.

Step-by-step explanation:

Consider the provided information.

Illinois license plates used to consist of either three letters followed by three digits or two letters followed by four digits.

Part (A)

Let A is the ways in which plates consist of three letters followed by three digits and B is the ways in which two letters followed by four digits.

Here repetition is allow. The number of alphabets are 26 and the number of distinct digits are 10.

The numbers of ways in which three letters followed by three digits can be chosen is: $26\times 26\times 26 \times 10 \times 10 \times10$

$26^3\times 10^3=17576000$

The numbers of ways in which two letters followed by four digits can be chosen is: $26\times 26\times 10 \times 10 \times 10 \times10$

$26^2\times 10^4=6760000$

Hence, the total number of ways are 17576000 + 6760000 = 24336000

Randomly chosen plate contains the number 2222 that means the first two letter can be any alphabets but the rest of the digit should be 2222.

Thus, the total number of ways that a randomly chosen plate contains the number 2222 number are: $26^2=676$

The probability that a randomly chosen plate contains the number 2222 is:

$\frac{676}{24336000} \approx 0.000028$

Part (B)

The number of ways in which chosen plate contains the sub-string HI:

If three letters followed by three digits plate contains the sub-string HI, then the number of possible ways are:

$26\times 1\times10^3+1\times 26\times10^3$

If two letters followed by four digits plate contains the sub-string HI, then the number of possible ways are:

$1\times 10^4$

Thus, the total number of ways that a randomly chosen plate contains the sub-string HI are:

$1\times 10^4+26\times 1\times10^3+1\times 26\times10^3$

$62000$

From part (A) we know that the total number of ways to chose a number plate is 24336000.

The probability that a randomly chosen plate contains the sub-string HI is:

$\frac{62000}{24336000} \approx 0.002548$

7 0

3 years ago

Below are the data collected from two random samples of 500 American students on the number of hours they spend in school per da

nexus9112 [7]

Answer:

To find the mean you must add up all the numbers you have together and then divide the buy the amount of numbers you added. When you add these numbers up you get 30, and we have 5 numbers here, when we divide 30 by 5 we get 6. So, Tara is correct in saying that the mean is 6.

Step-by-step explanation:

7 0

4 years ago

4r3 +8r2 −5r−10? It = to <br><br> (r+2)x(4r^2-5)

tangare [24]

Answer:

4r^3+8r^2-5r-10

= 4r^2(r+2)-5(r+2) [Factorise out like terms; distributive law of multiplication to check]

=(4r^2-5)(r+2) [Combine expressions]

7 0

3 years ago