Is there sufficient evidence at the a = 0.10 level to conclude that, on average, they sent each other more
than 100 messages per day?
Choose 1
No, because 0.001 <0.10.
Yes, because 0.001 <0.10.
No, because 0.001 <3.36.
Yes, because 0.001 < 3.36.

it is the first one

Step-by-step explanation:

Khan

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.

180°

step-by-step explanation:

sum of equilateral triangle=180°

< n=60°

< m=120°°[angle supplementary of equilateral angle]

< m+< r+< x=360°(sum of exterior angle of triangle)