Question

If ab=1, bc=-16,c=-band c <-a what is the value of a+b?

Answer 1

`4.25`

Explanation:

since bc= -16

and c= -b

than b has to equal 4

and c has to equal -4

now we can fill in what we know with ab=1 to find a

`a(4)=1`

divide 4 on both sides

`a=(1)/(4)`

Now that we know a and b we can find a+b

`(1)/(4) +4`

`4.25`

Hope this helps please let me know if this was confusing