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3 years ago

What is the meaning for “mean” in math?

2 answers:

7 0

Basically, in math the "mean" is a set of numbers that you add, then take the sum and divide it by how many numbers are in that set. Here is an example: 6, 7, 4, 5, 8, 9, 3. The sum of the numbers in this set is 42. However, there are 7 numbers in this set. So basically what you would do is take the sum of the numbers, 42, and divide it by the amount of numbers that are in this particular set, 7. So, 42÷7=6. So now you have figured out that the mean is 6. I hope this could be helpful!

eimsori [14]3 years ago

6 0

Mean is average of the numbers

Ex.
7,3
7+3=10/2=5

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Write the addition or subtraction shown by the number line

Zigmanuir [339]

-3+7=4 should be your answer

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3 years ago

Read 2 more answers

Circle the value of the meaning of the underlined 572 underline is the 5

vekshin1

the 5 is in the hundreds place, the 7 is in the tens place and the 2 is in the ones place

8 0

3 years ago

PLEASE ANSWER ALL BIG REWARD

sleet_krkn [62]

Answer:

multiplying
similar figures
scale factor
(x, y) (–3x, –3y) and (x, y) (0.23x, 0.23y)
(x, y) --> (2x, 4y)
Need diagram
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<em>good luck, i hope this helps :)</em>

6 0

3 years ago

Factor 2a2b3 - 14ab + 16a

zhuklara [117]

Answer:

2a(b^3 - 7b + 8)

Step-by-step explanation:

I'm assuming that 2a2b3 is 2a2b^2. If not, this answer isn't correct.

Look at the whole numbers. Is there a number that divides into them evenly? Yes, 2, so you pull 2 from the problem and divide each number by 2. Do the same for each variable.

2a2b3 - 14ab + 16a

2(ab^3 - 7ab +8a)

2a(b^3 - 7b + 8)

6 0

3 years ago

Need help ASAP!!!!!!

trapecia [35]

Answer:

see explanation

Step-by-step explanation:

x² + 3x + 7 = 5 ( subtract 5 from both sides )

x² + 3x + 2 = 0 ← in standard form

(x + 2)(x + 1) = 0 ← in factored form

Equate each factor to zero and solve for x ( zero product rule )

x + 2 = 0 → x = - 2

x + 1 = 0 ⇒ x = - 1

--------------------------------------------------------------

x² - 2 = - 2x² + 5x ( subtract - 2x² + 5x from both sides )

3x² - 5x - 2 = 0 ← in standard form

(3x + 1)(x - 2) = 0 ← in factored form

Equate each factor to zero and solve for x

3x + 1 = 0 ⇒ 3x = - 1 ⇒ x = - $\frac{1}{3}$

x - 2 = 0 ⇒ x = 2

------------------------------------------------------------

(x + 3)² + 4x = 0 ← expand left side using FOIL and simplify

x² + 6x + 9 + 4x = 0

x² + 10x + 9 = 0 ← in standard form

(x + 9)(x + 1) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 9 = 0 ⇒ x = - 9

x + 1 = 0 ⇒ x = - 1

4 0

3 years ago