4/7 and 10/17.5
18/8 and 9/4
Proportions
2/3 and 9/12
3/8 and 6/141
7/5 and 27/20
Not a proportion
A decimal equivalent to another decimal is the same number but with more zeros on the right hand side.
0.68 = 0.680 = 0.6800 = 0.68000 etc.
0.9 = 0.90 = 0.900 = 0.9000 = 0.90000 etc.
Just pick whichever two numbers you like :)
The answer is A: S11=(11Ek=11)6+(k-1)2
The length would be:
120-2(20)=2x
Then you would solve for x.
120-40=2x
80=2x
x=40, so the length is 40 yards.
So perimeter is adding all sides
In this picture, you have all sides, so add them up!
(2a-3)+(3a+1)+(2a) = P
So this expression shows that we're adding all sides that gives us the P, or perimeter :)
