Answer:
122.5
Step-by-step explanation:
Let the student normal score be 100
In the beginning score increased by 40%
Hence score at the beginning =100+40 = 140%
Now before end score decreased by 25%
Decrease = 25% of 140 = 35
Hence score at the end of month = 140-35 = 105
Average score for the month
= Total of scores of end and beginning month /2
= 
Answer:
225/4
Step-by-step explanation:
When you are trying to find the number to be added to a binomial of the form : 
in order to make it a perfect square trinomial, all you need to do is to use the square of half of the coefficient b. That is : 
.
In your case this is: 
The answer is 7, because you multiply it by 6.
Check out slader.com if this is a textbook problem
