The empirical rule states that at 95% the measurements would be within 2 standard deviations of the mean.
You are given a mean of 68 inches and a standard deviation of 4.
2 times the standard deviation = 2 x 4 = 8
So 95% of the heights would be between 68-8 = 60 inches and 68+8 = 76 inches.
<h2>Steps:</h2>
So firstly, I will be factoring by grouping. For this, factor x⁶ - 9x⁴ and -x² + 9 separately. Make sure that they have the same quantity on the inside of the parentheses:
Now, you can rewrite the equation as:
However, it's not completely factored. Next, we will apply the formula for the difference of squares, which is . In this case:
Next, we will apply the difference of squares once more with the second factor as such:
<h2>Answer:</h2>
<u>The factored form of this equation is: </u>
Answer:
The question is invalid. Please rewrite the question.
Step-by-step explanation:
A={3,4,7,9}
B={8,9,10,11}
now,
AUB={3,4,7,9}U{8,9,10,11}
={3,4,7,8,9,10,11}
hope it helps.
I’m not sure if the answer is correct but what I did was 9 times 1 is 9 so what then I did was 9 divided by 88=9.79