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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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Choose the correct simplification of 8x2(5x 2x2 − 3). 16x4 − 40x3 24x2 16x4 40x3 − 24x2 40x4 16x3 − 5x2 40x4 − 10x3 5x2
yKpoI14uk [10]

The correct simplification of 8x2(5x 2x2 − 3) is 16x^{4} +40x^{3} -24x^{2}

<h3>What do you mean by simplification?</h3>
  • Simplifying procedures is one way to achieve uniformity in work efforts, expenses, and time. It reduces diversity and variety that is pointless, harmful, or unnecessary.
  • Making anything simpler is the act or process of simplification. Everyone is in favor of streamlining court procedures.
  • Certain "solving" issues are connected to "simplification" issues. Parentheses and even nested grouping symbols can be found in some equations, just like in some expressions. Whether we're working with equations (so we're also solving) or expressions (and only simplifying), the simplification procedure is the same in both cases.

The correct simplification of 8x2(5x 2x2 − 3).

8x^{2} (5x+2x^{2+1} -3)=8*2x^{2+2} -8*3x^{2}

                                =40x^{3} +16x^{4} -24x^{2}

Rearranging the above expression in descending order of power, we get:16x^{4} +40x^{3} -24x^{2}

The correct simplification of 8x2(5x 2x2 − 3) is 16x^{4} +40x^{3} -24x^{2}

To learn more about simplification, refer to:

brainly.com/question/723406

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4 0
2 years ago
Which ratio is greater than 16?<br> A.22:32<br> B.3:8<br> C.1:2<br> D.3:4
Zielflug [23.3K]

Answer:

B: 3:8

Step-by-step explanation:

3x8=21

1x2=2

3x4=16

22x32=424

7 0
3 years ago
R = 3.7 m.<br> Calculate the circumference of the circle.
Ksivusya [100]

Answer: 23.25m

Step-by-step explanation:

C=2πr=2·π·3.7≈23.24779m

3 0
3 years ago
Help!! Would the answer be c??
Westkost [7]
The answer is a. jksksvw
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3 years ago
Andy is solving a quadratic equation using completing the square. If a step in the process results in 169/9 = (x – 6)2, could th
natta225 [31]
Yes the equation can be solved by factoring. Using the given equation take the square root of both sides. Both 169 and 9 are perfect squares so the left side becomes plus or minus 13/3 which is rational. Six plus 13/3 is also a rational number. If the solutions of a quadratic equation are rational then the equation is factorable. Please mark a good rating and brainlest
8 0
3 years ago
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