Simplifying Algebraic Expressions Coloring Activity Directions Complete each problem and circle
either answer one or two. The color will
orrespond with the problem and the number on
the picture. For example of the student gets
.nswer 6a for number 1, the student should color
all of the number ones SILVER in the picture
Problem
Answer 1
Answer 2
1
5a - 20.3
Oa
Silver
Yellow
2(a - 3) - 4a
Bao
Green
White
3
126x - 2 - 3 - 14
48x - 38
Pink
-24x - 10
8
Purple
4
Hy - 8x + 5x - 3y
-3x+Y
Red
3x+7Y
Gold
5
6a - 10(a - 5) +22
-40 - 28
Blue
40+ 72
Pink
6
4 Bb - 4
Yellow
16b - 44
Orange
7
-2x + 18y - 14x + 30% - Y
-13x + 15y
Gray
-19x + 2ly
Black
8
Jimmys garden has a length of 2b
+ 4 and a width of 7b + 2 What is
the perimeter of the garden?
9b + 6
White
18b + 12
Pink
Lisa's pool has a length of 5b + 2
and a width of 9b - 4. What is the
perimeter of the pool?
28b - 4
Light Blue
1462
Purple
Mom

answer: the answer is ann

step-by-step explanation: s

irst, find the z score of a score of 80. this is given by the formula z = (x-u)/o, where x is the score, u is the mean, and o is the standard deviation. this gives

z = (80-78)/12 = 1/6 = .1667

now, find what percentile a z score of 1/6 correlates to in the normal distribution.

a z score of 1/6 = .1667 is equivalent to the 56.36th percentile of the distribution. so the probability a score is over this is 1-.5636 = .4364

the mean of a sample mean is equal to the original mean. however, the standard deviation of a sample mean is equal to the original standard deviation divided by the square root of n (sample size). so the new standard deviation is 12/sqrt(16) = 3.

the new z score is 80-78/3 = 2/3 = .667. this is equivalent to the 74.86th percentile. so the probability that the mean will be greater than this score is 1-.7486 = .2514.

cluster sampling.

step-by-step explanation: