Which of the following creates 90 degree angles at the points of intersection and also cuts a segment into two congruent pieces? a. bisector b. angle bisector c. perpendicular line d. perpendicular bisector

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

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

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.