To get the value of n u have to set n by itself, first we have to set teh smallest n to teh other side this will give you 0=8+2n now subtract the 8 from both sides because it is positive and the only way to get rid of a positive is with a negative this will give you -8=2n, now to set n by itself divide by 2 in both sides because in order to get rid of a multiplication you have to divide, this will give you n=-4, so your answer will be letter A
Hope this helps
Answer:
be rewritten as a square of a sum
Step-by-step explanation:
The required length of the hypotenuse of the triangle is √19.
<h3>
What is a right triangle?</h3>
- A right triangle, sometimes known as a right-angled triangle, or more formally an orthogonal triangle, formerly known as a rectangle triangle, is a triangle with one right angle or two perpendicular sides.
To find the required length of the hypotenuse of the triangle:
Legs in the right triangle refer to the perpendicular and base.
Hypotenuse:

Therefore, the required length of the hypotenuse of the triangle is √19.
Know more about right triangles here:
brainly.com/question/2437195
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I can only guess that you meant to write
12 + 3 = 3 + 12
which would be the commutative property of addition.