Erin invests $500 into an account with a 2.1% interest rate that is compounded semiannually. How much money will she have in this account if she keeps it for 5 years?

In a school 2/3 of the students study a language of those who study a language 2/5 study french

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

Use complete sentences to differentiate between a regular tessellation, and a pure tessellation. be sure to include specific types of polygons in your explanation.