A bowl weighs 11/40 lb. Express this as a decimal. Explain how you can find the decimal by thinking of the denominator as a 4 and then using mental math.

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

How to do this , and can some one explain

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