Compute the sum to simplify C :

Now,
is the entry of the matrix in row i and column j, so



Answer:
ez
Step-by-step explanation:
14/15 - 9/15 = 1/3
1/3 = 5/15
Answer:
-1
Step-by-step explanation:
I used a calculator :)
X=18
Explanation:
The sum of the 3 angles in a triangle is 180∘
hence , the sum of the 3 angles given must equal 180
We can form an equation
2x + 3x + 5x = 180 ⇒10x=180⇒x=180/10
x=18
2(x) = 2(18)=36
3(18)=54
5(18)=90