For positive acute angles A and B, it is known that cos A = 29 and sin B = 3. Find the value of cos(A + B) in simplest form.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.