by using Pythagoras theorem,
third side will be either 8^2+5^2=sqrt(64+25)=sqrt(89)=9.43 or
8^2-5^2=sqrt(64-25)=sqrt(39)=6.24
the difference is=9.43-6.24=3.19inches i think this is it i may have messed up
Lenght is 4 1/2 cm
P=2L +2W
15cm = 2L + 2(2/3L)
15cm = 2L + 4/3L
15cm = 2 4/3 L
15cm ÷ 2 4/3 = 2 4/3L ÷ 2 4/3
4 1/2cm = L
Check
P=2L +2W
P=2(4.5) +2(3)
15= 9 +6
15=15
Answer:

Step-by-step explanation:
we have
-----> equation A
----> equation B
we know that
The solution of the system of equations is the point 
so
The solution of the equation
is equal to the x-coordinate of the solution of the system of equations
therefore
The solution is 
Answer:
id have to see the chart to help you
i can see k which the answer for 19).is (0,-3)
but for 20 id have to see the chart
Step-by-step explanation:
if you add a picture of the chart i can help:)