An item costs 340 before tax, and the sales tax is 20.40 .Find the sales tax rate. Write your answer as a percentage. please help fast!

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

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.