What is the gcf of the following expression 16a^4b^2+20a^2b^2-4ab^2

I have a pile of 20 coins that includes dimes and quarters. The coins total is $2.75. How many quarters do I have? Explain your reasoning.

Write the arithmetic series using summation notation. 7.5+13.5+19.5+25.5+31.5+37.5

Mike says that 3/3 of his fraction model is shaded blue and Ryan says that6/6shaded blue are the two fraction equivalent what's is another fraction

Factor: x2 + 9x - 36

R/5=9/21 solve for r

one day the temperature in Rome Italy it was 30°C ... the temperature in Dallas, Texas was 83°F. which temperature was higher

If Rodney bikes 190 miles every 4 days how many miles would he bike in 6 days

Determine whether the following question is a statistical question. If it is a statistical question, identify the units for the answer. An antique collector wants to know the age of a particular chair in a shop.

Genius society requires an IQ that is in the top 2% of the population in order to join. If an IQ test has a mean of 100 and a standard deviation of 15, what is the minimum qualifying score to join the genius society?

If 2a=9-b and 4a=3b-12, what is the value of a?