Answer:
2/21
Step-by-step explanation:
The first purple is 5/15 and the second is 4/14. Multiply them together to get 2/21.
1.) 28-3x-4= 2x+12+x
2.) 24-3x= 3x+12
3.)24-6x=12
4.)-6x=-12
5.)x=2
Answer:
-2
Step-by-step explanation:
The slope of a line is rise over run between two points.
In this line there is an upward rise of 2, and a horizontal run of -1.
Therefore the slope is just 2/-1 which is -2.
Hope this helps!
Answer:
(72.22%)
Step-by-step explanation:
For this question, you must get at least one blue block. However, you can also think of it this way: pretend the other seven blocks are red (it does not matter since the colors other than blue do not matter) what is the probability that you do not only get red blocks?
You can calculate the probability that you only get red blocks simply with multiplication rule:


(not the numbers increment down because they are not replaced)
Then, you use the fact that having red blocks and not having red blocks as a complement to calculate the probability


This is your final answer: 72.22%
As the level of significance here is 0.05 because we are comparing the p-value with 0.05. Therefore the critical region boundaries here would be given as:
For 5 degrees of freedom, we get: ( from the t-distribution tables )
P(t_5 < 2.571) = 0.975
Therefore due to symmetry, we get:
P(-2.571 < t_5 < 2.571) = 0.95
Therefore the critical region here would be given as: +2.571 and -2.571