I need help I don't understand this.

Asystem of equations has 1 solution. if 4x-y=5 is one of the equations , which could be the other equation ?

Ke’ajah has a coupon for 1/3 off the regular price, t, of a tent. which expression represents the price of the tent using the coupon? select the two correct expressions. a. 1/3t b. 2/3t c. t - 1/3 d. t - 2/3 e. t - 1/3t f. t - 2/3t

Solve the triangle. a = 21°, c = 105°, c = 5