identify the type of sample: to estimate the percentage of defects in a recent manufacturing batch a quality control manager select every 14th truck that comes off the assembly line starting with the ninth until she obtains a sample of 60 trucks.

a. self-selected sample.
b. systematic sample.
c. convenience sample.
d. simple random sample.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Will mark name all segments skew to bc

Scenario: susan wants to make 2 square flags to sell at a crafts fair. the fabric she wants to buy is 3 meters wide. she doesn't want any fabric left over. what's the least amount of fabric she should buy? question: which equation will susan solve her problem? note: let x represent the length of 1 side of the flag. options: 1) 2x^2 = 4x 2) 8 +2x = 2(4x) 3) 2 * 2 = 4 * 2 4) 4x^2 -2x = 0