Answer:
Step-by-step explanation:
<u>Completing the square</u>
- x^2 - 8x + 7 = 0
- x^2 - 2*4x + 16 - 9 = 0
<u>The blanks are</u>
Answer:
The cutoff value for the top 5% of all IQs is 131.255.
Step-by-step explanation:
When the distribution is normal, we use the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this question, we have that:

What is the cutoff value for the top 5% of all IQs
This is the 100 - 5 = 95th percentile, which is X when Z has a pvalue of 0.95. So X when Z = 1.645.




The cutoff value for the top 5% of all IQs is 131.255.
Answer:
169
Step-by-step explanation:
13*13=169
We can split the two 13's up:
(10+3)(10+3)
Multiply 10 with 10, 10 with 3, 3 with 10, and 3 with 3.
Basically, just multiply every single term together.
100+30+30+9
100+69
169
Hope this helps!
Answer:

Step-by-step explanation:
The coordinates of A and B are missing in the question
Assuming point A is at (1,2) and B is at (1,9) then the coordinates of that partitions AB in the ratio m:n=1:2 is given by:

We substitute the values to get:

We simplify to get:



If she has 3 cheeses and wants to bring in cheese for 12 days she has 3 and splits it up into 12 days so thats 3/12 which is 0.25 per day