Four sisters contributed equally to buy a present for thier father. they receive a 10% discount on the original price of the gift. after the discount was taken each sister paid 13.50.what was the original price of the gift?

What is the prime factorization of 23 ?me with this question

Aflower has 26 chromosomes. to create a new flower, how many would a sperm cell have what is called?

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?