Solve using the substitution method. y+2x=7 14-4x=2y

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get