Let A ={1,2,3} and B={x|x is a prime number less than 10 } find A×B B×A

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?