You have to find a common denominator 1st then add. So 16 is the common denominator the problem should be 2 7/16+1 14/16+8-16= 3 29/16 then you need to divide 29/16 you will have 4 13/16
X^2+4x+3 or (x+1)(x+3) it depends what the question is asking you to do
Okay, well with the information given, you can not come to an answer. Is there something that shows all of the students who were in the survey?
Edit: Okay so there are 520 students in total.
We can say that the graph is equal to 520/520
However, we are trying to find how many of the 520 people voted for james. We know that James received 15% of the votes.
Now, we can find 15% of 520 by taking 15/100 times 520. The answer is 78.
4 x 1/5 is 4/5 so it is not that one. 1/5+1/5+1/5+1/5 equals 4/5 so it is not that one. 2 x 2/5 is 4/5 so it is not that one.
2+2/5 is 12/5 so this expression does not equal 4/5
I^2 is negative 1, but I see you have a negative sign there. So it is -(-1), which is 1.
