The width of a rectangle is 8n -3.5 feet and the length is 3.5n + 4 feet. Find the perimeter of the rectangle

23n + 1

Step-by-step explanation:

8n - 3.5 + 8n - 3.5 + 3.5n + 4 + 3.5n + 4

   8n - 3.5

   8n - 3.5

+  3.5n + 4

  3.5n + 4    

     23n + 1

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%