Find the lower bound for the following lengths: a) 40 cm measured to the nearest cm.

b) 82.8 cm measured to the nearest tenth of a cm.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

In a column proof the right column states your reasons

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