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goldfiish [28.3K]
3 years ago
7

Question 18 Calculate the mean 12, 2, 9, 12, 10

Mathematics
2 answers:
kramer3 years ago
6 0

Answer: 9

Step-by-step explanation:

first u have to add up all the numbers "12 + 2 + 9 + 12 + 10" and that's 45 then u have to divide by how many numbers there are, so there's 5 numbers. ur dividing "45/5" which is 9 so the mean is 9

mark as brainly plss

Schach [20]3 years ago
3 0

Answer:

Mean = 9

Step-by-step explanation:

The mean is the average of a data set.  Given the values, 2, 9, 10, 12, 12:

Add all the numbers in the data set, and divide its sum by the number of items in the set:

Mean = \frac{2+9+10+12+12}{5} =  \frac{45}{5} = 9

Therefore, the mean of the given data set is 9.

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I would like help ASAP please
erica [24]

Answer:

The measure of angle T is 135 degrees.

Step-by-step explanation:

Let's just say the measure of angles T and S are variables t and s.

So the equation would be...

t + s = 180

Since they are supplementary angles, they add up to 180.

Also, we know that t is 3 times s.

t = 3s

Now we can solve this system of equations.

Substitute 3s into t of the first equation.

3s + s = 180

4s = 180

s = 45

Then, since we know that the measure of angle t is 3 times the measure of angle s, we can just multiply 45 by 3 and find the measure of angle t.

45 * 3 = 135

t = 135

So the measure of angle t is 135.

*<em>Just copied from my previous answer, don't know why you needed it again but here you go.</em>

7 0
3 years ago
Read 2 more answers
What is the value of the expression?
melisa1 [442]

Answer:

2/0 or infinity

Step-by-step explanation:

3 0
3 years ago
Angle RZT=110<br> Angle RZS=3s<br> Angle TZS=8s<br> What are angles RZS and TZS?
nekit [7.7K]
Angles RZT, RZS, and TZS form triangle RZT, so they sum to 180.  Thus, we have:

110+3s+8s=180

Simplifying, we have:

11s=70

Dividing by 11, we see that:

s=70/11

Therefore, RZS=3s=210/11, and TZS=8s=560/11.
6 0
3 years ago
Jocelyn estimates that a piece of wood measures 5.5 cm. If it actually measures 5.62 cm, what is the percent error of Jocelyn’s
nataly862011 [7]

Answer:

A

okay? Answer A

5 0
3 years ago
Diana invested $3000 in a savings account for 3 years. She earned $450 in interest over that time period. What interest rate did
matrenka [14]
If I=P*r*t, we can input 450 in for I, 3000 in for the principal (P, or the starting rate), and 3 for t=time because there were three years, resulting in 450=9000*r. Next, we can divide both sides by 9000 to get 0.05 or 5% as our answer.
8 0
3 years ago
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