Answer:
20
Step-by-step explanation:
x - 9 = 11
+9 +9
x = 20
3 and 60." The means of the proportion is 15 and 12.
Answer:
L=135 W=105
Step-by-step explanation:
Your rectangle has two length sides and two width sides. That means two sides are 30 feet longer than the other sides. If you subtract 60 from 480, you get 420. Divide 420 by 4 and you get 105. So now you know the width sides are 105 feet long, so 105+105=210. Now all you have to do is add 30 to 105 and get 135. That is the length of the two longer sides. So add 135 and 135 to get 270. All you have to do is add 210 and 270 and you end up with the 480 feet of fence you were given. I know this is probably not the fancy way of doing it, but it works.
