If tan= 1 and sine <0, then value of cos is

Me what is the value of x? showing work would be appreciated - ! : )

What is the value of x in the equation 6(x + 1) – 5x = 8 + 2(x – 1)?

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills