If a pentagon is regular, then all of the sides are the same length. This means that
So, if 
, the lengths of the sides evaluate to
So, all the sides of the pentagon are 21 units long, and AB is 21 units long as well, because all sides are the same length.
Answer:
take the population mean divided by four
Step-by-step explanation:
Answer:
50%
Step-by-step explanation:
As there are only two sides of the coin it will be 50% each.
10 days is twice the half-life. After 5 days, can expect
grams to remain; after another 5 days, you'd be left with
grams.
Answer:
C.
Step-by-step explanation:
3 times 2 is 6, 2 times 5 is 10, 5 times 3 is 15. However you need 2 for each since there are 3 sets of two equal faces. So it will be 6+6+10+10+15+15
