Question

mrs.piner asks her class which x-value satisfies the equation 4x = 20. four students answers are listed on the board lan x = 20stella x = 6xiao x = 5 zoe x = 16which student is correct and why ?A . lan is correct because 4(20)=20.B. stella is correct because 4(6)= 20C. xiao is correct because 4(5)= 20.D. zoe is correct because 4(16)= 20

Answer 1

To find the solution of the equation, isolate x:

`\begin{gathered} 4x=20 \\ x=(20)/(4) \\ x=5 \end{gathered}`

x has a value of 5. It means that Xiao is correct, because 4(5)=20.