Complete the following proof. Given: ABCD is rhombus Prove: Statement Reason 1. 1. Given 2. AD = BC = CD = BA 2. 3. DO = OB; AO = OC 3. Diagonals of a parallelogram bisect each other. 4. DOA ≅ BOA 4. 5. 5. Complete the two-column proof by providing the missing statements or reasons above.

Choose the number sentence that shows the identity property of addition. a. 122 = 61 + 61 b. 62 = 1 + 61 c. 61 = 0 + 61

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?

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?