That is about right... 2,514 X 2 = 5,028 so he is about 1,000 off. I will leave the rest to you.
X^2-10x-24=0
(x+2)(x-12)=0
x=-2 or x=12
Expression simplified: 
Step-by-step explanation:
The expression that we have in this problem is:

The first type of operation that we have to solve in such expression are multiplication/division.
In this expression, there is only one multiplication, that is:

So we can rewrite the expression as

Now we can evaluate the sum of the similar terms: in this case, similar terms are only 3 and 4, and their sum is

Therefore, the expression can be rewritten as

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Answer:
28/100
55/100
40/100
50/100
Step-by-step explanation:
Answer:
Option 2
Step-by-step explanation:
Mid point theorem:
The line segment joining the mid point of two sides of a triangle, is parallel to the third sides and this line segment is half the length of the third side