(20pts) prove that a^2+b^2+c^2 ≥ 2(ab+ac-bc)

How do you multiply a mixed fraction by a regular fraction

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol