Which of the following sets of numbers could be the lengths of the sides of a triangle?

a. 7.4 cm, 10.5 cm, 15.5 cm
b. 10.5 cm, 15.5 cm, 4.5 cm
c. 7.4 cm, 15.5 cm, 23 cm
d. 7.4 cm, 10.5 cm, 19.5 cm

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Answer pls man im trying to get out of summer school

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?