A variable is an English letter we take for unknown values or quantities.We are given expression : 
.
In the above given expression we have x and y English letters, because we don't know the values of them.
And we have some constant in front of those English letters.
We have 
in front of xy.
<em>The coefficients are the constant numbers in front of variables.</em>
<h3>Therefore,
is the coefficient of the term
.</h3><h3>Therefore, correct option is a. 6/7.</h3>
I believe it is an obtuse triangle. Because one triangle is so big there isn’t any 90 degrees and therefor not a right. It might be acute but it had an obtuse side.
14/12=1 and 2/12= 1 and 1/6
31/10= 3 and 1/10
Irrational numbers are numbers that can not be written as a simple fraction. An example of one would be 
. Pi is about 3.14, but it goes on forever. You can not write pi as a simple fraction.
