What is the difference between a prime and compostite number?

What is 1 3 over 4 as a percentage? What does the term endosperm haustoria mean? What are some examples of mathematical investigation? If 2x minus7 equals 9 then x equals? What is the prime number of 210 and 98? How much sand would it take to fill a 6' x 6' sandbox? What is the LCM of 42 and 6? How many sets of parallel lines does a heptagon have? Can you have two different exponents on a base number? Is 5 of 6 more than 10 of 12? What is smaller 2.35 or 23.5? How many times is addicted used in the bible? What objects have an acute angle? What is the procedure before undergoing parenthesis? What are the multiples of 21 from 1 to 1000? How do you find what percent 5.99 is of 29.99? Is it 15 seconds per each kill? What are squares and circles you see from a plane? Is 12 a prime or composite number why? How do you say 21.3 in words?