Answer:
x=-3.5
reason:
first, add 3 to both sides
this makes the equation -1/2x=7
then, divide both sides by -1/2
this will give you x=-3.5
Answer:
a real number
Step-by-step explanation: You didn't list the choices- a real number is all positive numbers except 0
Answer:
the second value is ten times higher then the refference one
Answer: uhhhhhh pass
Step-by-step explanation: