Calculate the margin of error in a sample of 100 people with a standard deviation of 12.5.

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b? define a variable for the situation. write an inequality that represents the situation. solve the inequality to find out how many months he needs to keep the website for site a to be less expensive than site b. using words, describe how many months he needs to keep the website for site a to be less expensive than site b.

Write a corresponding real world problem to represent 2x - 125=400

1. what is the measure of ∠abc? what is the measure of ∠abd?