Answer:
case A. 
case B. 
case E. 
Step-by-step explanation:
we have

we know that

<u>Verify each case</u>
case A) 

therefore
is equivalent to 
case B) 
so
is equivalent to 
case C) 

therefore
is not equivalent to 
case D) 
so
is not equivalent to 
case E) 

therefore
is equivalent to 
case F) 
so
is not equivalent to 
Answer:
12.93
Step-by-step explanation:
26.49-13.56= 12.93
No 01010010001 is not rational
Answer: 23+32-3×4-52÷5+(7×4)= 60.6
Step-by-step explanation: