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Elan Coil [88]
3 years ago
7

Vikki wants to determine whether students in her school would rather attend sporting event or a concert. Which would be the BEST

method for Vikki to produce a representative sample?
A. Randomly survey 50 students from each of the three grades at her school

B. Randomly survey 20 students from each of the three grades at her school

C. Randomly survey 50 students from her grade at her school

D. Randomly survey 50 students at her school
Mathematics
2 answers:
nevsk [136]3 years ago
7 0
Most likely ill go with D.
bija089 [108]3 years ago
3 0
B . in that way , she'd get a variety of age groups and stuff
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Step-by-step explanation:

Perpendicular means that the slopes of the "old" line and the "new" line are opposite reciprocals; bisector means that the "new" line goes directly through the center of the "old" line. This perpendicular bisector, then, will go directly through the center of the "old" line, cutting it directly in half and leaving in its wake a 90 degree angle. To write this equation, then, of the perpendicular bisector, we need the slope of the old line and the midpoint of the old line. Let's work on the midpoint first:

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