How many mouths have 31 days?

What is 4.2 percent of 12151.80? Is it true that the character of the speaker is an artistic proof? Why do the runners look flushed only 20 minutes into the race? What are things shaped like a triangular prism? What time what equals -180 but when you add it it adds up to -3? Can you write 12500000 in word form? How do you make 3.2808399 through a feet stick? Suggest a topic for maths project for class 9? What are the prime number from 74 to 83? The quare root of 125 is between what two whole numbers? What is the value of a 1995 penny having Lincoln on both sides? How many dollars are in 100000000 cents? What are practical uses for Roman numerals? What is 100000 mah? What is the symbol for no solution to an equation? What is a ray that divides an angle into two congruent angles called? What are the ordered pair to equation x plus y equals 15 and equation 4x plus 3y equals 38? What is standard decimal form in three thousandths? What is the formula for calculating heat rate for a peaking gas turbine? What is 12 in roman numrals?