Answer:
Commutative property of addition of rational numbers: Two rational numbers can be added in any order. Thus for any two rational numbers a/b and c/d, we have. (a/b + c/d) = (c/d + a/b)
Not much can be done without knowing what
is, but at the least we can set up the integral.
First parameterize the pieces of the contour:
where
and
. You have
and so the work is given by the integral
I'm more visual, but if you're not, and this confuses you, ask me, and I'll explain it.
Given: The information provided in the table shown
To Determine: From the options provided, the correct option that best describe the information given in the table
Solution
Given that 28% of the children used toothpaste. From the table
Let us calculate the percentage of adult that used toothpaste
Hence, a smaller percentage of adults (about 11%) use the toothpaste.
The correct option is OPTION C
No because the sum could also be irrational number which for example it could be square root of 9 or 49
Hope this helps answer your question