Answer:
The shelf is not a right triangle
Step-by-step explanation:
Given

Required
Determine if it is a right triangle
To do this, we make use of Pythagoras theorem which implies that; the square of the longest side = the sum of the square of the two other sides.
So, we have:

Evaluate all squares


The above is not true because:

<em>Hence, the shelf is not a right triangle</em>
Answer:
, or 
Step-by-step explanation:
To divide, we can use fractions. So we can say that 0.04 divided by n is
, or
.
10(-2)^2/-5
The solution to this would equal to -8
:) You are using substitution which is putting the number as the variable or the letter.