ANSWER
The solution to the system is
EXPLANATION
The system of equations are:
and
We put equation (2) in to equation (1) to get,
We expand the parenthesis to obtain,
We group like terms to obtain,
This implies that,
We divide through by 5 to get
We substitute the value of y in to equation (1) to get,
This implies that
We divide both side by 3 to get,
Answer:
(-1,1)
Step-by-step explanation:
All you have to do is plug it in the equation:
(x,y)
For (-1,1)
1=2(-1)+1
Simplify:
1=-1 but you know that 1≠-1 so (-1,1) is not it
For (3,7)
7=2(3)+1
Simplify:
7=7
For (-3,-5)
-5=2(-3)+1
-5=-5
Simplify:
For (0,1)
1=2(0)+1
1=1
9/7 because of order of operations
Answer:
115
Step-by-step explanation:
The areas are as follows:
Deck 1: 5 * 5 = 25ft squared
Deck 2: 5 * 7 = 35ft squared
Deck 3: 5 * 9 = 45ft squared.
They increase by 10ft squared each time.