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1) __Mean, Median and Mode:__
1+2+2+5+6+9=25÷6=__4.16<<mean__ 2+2+3+4+6+7+8=32÷7=__4.57<<mean__ median-**the __middle number__ in the set. when there are __2 middle numbers__, the __median__ is their __mean__. ** 1, 2, 2, 5, 6, 9=2__<<mode__ 2, 2, 3, 4, 6, 7, 8=__2<<mode__** find the __mean, median and mode__ of this set. remember to __put the numbers in numerical number__ before you solve it.
 * mean-**the sum of the numbers in a set of data divided the number of pieces of data is the mean __(average).__
 * example:** **6 set of numbers: 9, 2 ,1, 6, 2, 5 7 set of numbers: 4, 2, 7, 8, 3, 2, 6
 * example: 6 set of numbers: 9, 2, 1, 6, 2, 5 7 set of numbers: 4, 2, 7, 8, 3, 2, 6
 * mode-**the __most common number__ in a set of data. you can have more than 1 mode and you can also have no mode.
 * example: 6 set of numbers: 9, 2, 1, 6, 2, 5 7 set of numbers: 4, 2, 7, 8, 3, 2, 6

19, 12, 6, 3, 6, 7, 10
3+6+6+7+10+12+19=63/7=9 is the mean

3,6,6,7,10,12,19=7+10=17/2=8.5

3,6,6,7,10,12,19=6 is the mode

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2) Square Roots:

 * square roots**-a number divided by itself.
 * perfect square**-is a square whose __side lengths are whole__.
 * example: square root of 169 is 13 because 13x13=169

use the perfect square chart below to answer the question.**

what is the square root of 3__0__?
the answer is 5.5 because 5.5x5.5=30.25
 * 1x1 || 1 ||
 * 2x2 || 4 ||
 * 3x3 || 9 ||
 * 4x4 || 16 ||
 * 5x5 || 25 ||
 * 6x6 || 36 ||
 * 7x7 || 49 ||
 * 8x8 || 64 ||
 * 9x9 || 81 ||
 * 10x10 || 100 ||

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off the original price? why or why not?
its the same as 25% because when you add 15% to 10% off is 25%.

__817rcanswers__

__solve this problem by using fracton.__ 10/8 = x/21
21x10=210 210/8=26.25

__solve this problem by using ratio table.__
= =



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