Let's make the equation.
2(N+9)=6
Let's divide both sides by 2.
n+9=3
Now subtract 9 from both sides.
n=-6
So, the number is -6.
This problem is far beyond my capability this problem is declared to be one of the toughest in the world due to it not agreeing with the quadratic formula
Answer:
28 square metres
Step-by-step explanation:
Calculate the total surface area of the glass covered part of the rectangular aquarium
Surface area = 2(4 × 2) + 2(3 × 2)
= 16 + 12
Protective film needed = 28 square metres
It is already in simplest form, however it can be written as .5 and 50%.
