I believe it is 2.5 if you need me to explain I can
To solve this problem you must apply the proccedure shown below:
1. You have that:
- T<span>he equation d=1/2(n(n-3)) gives the number of diagonals for the polygon.
- The polygon that has 65 diagonals..
2. When you clear n, you obtain:
d=n(n-3)/2
d=(n^2-3n)/2
2x65=n^2-3n
n^2-3n-130=0
3. When you solve the quadratic equation, you obtain:
n=13
Therefore, the answer is: 13 sides. </span>
Answer:
Step-by-step explanation:
y<-5x+3
put x=3,y=-3
-3<-5×3+3
-3<-15+3
-3<-12
which is not true .
so (3,-3) is not a solution.
Same thing,
f(g(1))
=f(2(1)-6)
=f(-4)
f(-4)
=-4(-4)+7
=16+7
=23
