A 100 ft. ladder rests on top of a hook and ladder truck with its base 11 feet from the ground. When the angle of elevation of the ladder is 81o, how high up the building will the ladder reach?

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?