Answer: 11, 30
Step-by-step explanation:
Given
There were a total of 41 national battlefields and national memorials
Suppose there are 
national battlefields
So, national memorials are 
The sum of the two must be 41
So, there are 11 national battlefields and 
national memorials.
Answer:
-6x^2+x+8
Step-by-step explanation:
Add -1 and 9 because they are the only like terms
Answer:
15 feet
Step-by-step explanation:
Since this is a square the sides are of the same length.
Now the side multiplied by itself gives 225. Hence the length of the side is a number which multiplied by itself gives 225. It is easy to see that 15 × 15 = 225. Therefore the side is 15 feet long.
Answer:
(a) 
(b) 
Step-by-step explanation:
It is given that 
(a) We have given equation 
(b) 
