Which best represents the commutative property of addition?
1 answer:
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Answer:
Step-by-step explanation:
x^8/x^2= = x^6
when you divide same base and different powers, you subtract the powers
Answer:
The 80% confidence interval for the mean number of words a third grader can read per minute is between 40.4 wpm and 40.8 wpm.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find M as such
In which is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 40.6 - 0.2 = 40.4 words per minute.
The upper end of the interval is the sample mean added to M. So it is 40.6 + 0.2 = 40.8 words per minute.
The 80% confidence interval for the mean number of words a third grader can read per minute is between 40.4 wpm and 40.8 wpm.
Using Long Division, pic below
Your remainder is -61
After working this problem out, we know that 3x + 1 is not a total factor of the dividend, because there is a remainder.
When you divide a polynomial by another polynomial, if there is a remainder, it is not a complete factor.
<h3><u>After dividing, we are left with: 2x^3 - 2x - 4 + (3/(3x + 1))</u></h3>There is a remainder of 3.
