f < A and < B are complementary, and < A = 3x + 4 degrees, while < B = 6x - 4 degrees, find x.

Solve with work adding cheese to a mcdonalds quarter pounder increases the fat content from 21g to 30g. what is the percent of change ?

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?

286 divided by 457.6 what is the quotient?