When did Pythagoras' parents die?

How many 91cm length of ribbon can be cut out from a 7meter roll? How many sixy-thirds would seven ninths equal? What two number is equal 144? What percent is 87 over 100? What number goes into 174 equally? How do you differentiate x over 2? What is the difference in 43 and 40? What is 27 percent of 800? How do you change 27 percent into a simpelist form fraction? How do you multiply fraction by another fraction or a whole number? Why do you divide by 1000? How many kilometers per hour is 187 miles per hour? Simplify 660 over 11? What is a quotient s? Is 3279 a prime number? How much factors does 4 have? Do onions have stems? What phrase best defines a square? What is 17 100 in lowest terms? What is 37 one hundredths changed into a decimal?