Asquare has a perimeter of 38 inches. we want to know the length of each side. choose the best model for this problem.

38"/4=9.5"

Step-by-step explanation:

4*9.5 = 38"

My best guess would be #3 side length, since all 4 sides are equal in a square.

Side length, Side length, Side length, Side length

Step-by-step explanation:

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%

x/3-10=8

x/3=18

x=48