a species of cicada has a life cycle of 17 years a parasite that harms the cicada has a life cycle of 4 years if the last known encounter between these two was 1980 when can the cicada expect the next encounter with this parasite

5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.