At the oral language fair, tom’s speech took 9 1/2 minutes. andrea’s speech was 7/8 as long as tom’s. how long was andrea’s speech?

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

Bob’s bank charges him a $3.15 service fee every time he uses an out-of-network atm. if bob uses an out-of-network atm an average of three times every two weeks, how much will he pay in service fees over the course of a year? a. $327.60 b. $109.20 c. $491.40 d. $245.70 select the best answer from the choices provided a b c d

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.