This is a tricky question, all you need to know is that the remainder cannot be a negative number.
So, -50 mod 7 = 6, since -50 /7 = 8 with remainder of 6
Answer:

Its factorisation method friend. May it helps u.
You take the area and find the square root
V V
16 √
so you would be looking for √16 which equals 4
then you would add 4 by the length of the other 4 side to find the perimeter, which is ironically 16
Answer:
c) 5x + 13x = 180
Step-by-step explanation:
c) 5x + 13x = 180
c) 5x + 13x = 180