Answer:
16 is the missing number
Step-by-step explanation:
I hope you can see it just try to zoom in
we have

we know that

and

substitute in the expression



therefore
<u>the answer is</u>

Answer:
the answer for will be x≥-4
Let that certain number be 'n'
50% (n) = 39
50% ⇒ 0.5
0.5 (n) = 39
Divide both sides by 0.5
0.5n = 39
/0.5 /0.5
n = 78.
So that certain number is actually <em><u>78! :)</u></em>
CROSS CHECK:
50% of 78
0.5 × 78
= 39
Hope this helps! :)