% of decrease would be 100 - (22*100)/28
=100-78.57 = 21.43%
According to the associative property of equality: (a + b) + c = a + (b + c) we can see that the parenthesis do not mean anything when we are only doing addition.
So answers 1. and 3. are correct.
<em>Thanks Associative Property!</em>
Answer:


Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 500
Standard Deviation, σ = 100
We are given that the distribution of SAT score is a bell shaped distribution that is a normal distribution.
Formula:

We have to find the value of x such that the probability is 0.64
P(X<x) = 0.64
Calculation the value from standard normal z table, we have, 


Answer: 23
Step-by-step explanation:
Area = L+W+L+W
6 + 4 + 6 + 7 = 23
I got 6 buy put 3 and 3 together