You know if it's not reducible when there isn't any way to factor it using the grouping method. However, you should try to use the quadratic formula to find the roots after attempting to factor. If it still doesn't have any roots, that means the quadratic's vertex is either above or below the x-axis and is facing the other way. (meaning that it never touches the X-Axis)<span />
Answer:
70 - 79
Step-by-step explanation:
The mode interval is the interval with the largest frequency.
From the heights of the bars we see that this is 70 - 79
In form of pi it is 100pi. In simplified form it is 314.15927
<span>Because sample means were being tested, the bell curve is used to calculate the z-score</span>
Xyz = 60
As
2 x 3 x 10 = 60
