What comes in 15s?

When solving radical equations and you have a root number on one side of the equal sign and a negative number on the other side is it a no solution? What is 93 over 56 reduced? What is 65598000 in word form? What is 10.58 as a mixed number in lowest terms? 1095 millionths as an scientific notation? What is 154 written as a fraction or mixed number in simplest form? Why does the square root function have a restricted domain? Is 3 fourths equal to 6 eighths? Why is 74 not a perfect number? What is the mass of a cubic meter of air at 20oC at sea level? What is the fraction one tenth in decimal form? Why number 10 is important in our place value sistem? What are suicide precautions? What quadrants the graph of x - y equals 5 is plotted in when graphed? What is 0.197 in word form? If a spinner with 3 equal sections labeled A B and C is spun 4 times what is the probability of spinning B exactly 2 times? When i change miles to feet i expect to get how many feet? What does the word sum mean in maths? How many three digit even numbers are possible if the leftmost digit cannot be zero? What do verdical lines look like?