This involves a quick application of the power rule, which is
.
First, it is helpful to rewrite
as
. Remember that these are equivalent forms, but the latter is easier to use with the power rule.
We apply the power rule and simply:
700 because if it was 750 it would be closer to 800 but it is under 50
The probability is 0.8997.
We will use a z-score to answer this question. z-scores are given by the formula
With our information, we have
Looking this up in a z-table (http://www.z-table.com) we see that the area to the left of this (everything less than, up to this value) is 0.8997.
Answer:
What is the simplified form of this expression?
7a2 + 10a − 3a − 2a2
Step-by-step explanation:
7a2 + 10a − 3a − 2a2
Combine like terms
742 + 10a - 3a - 2a2
742 + 7a - 2a2
solution=
5a2 + 7a
