Of the 15-year-olds at a karate school, 5 have black belts and 9 have brown belts. Among the 16-year-olds, 13 have black belts and 19 have brown belts. Which age group has a lower ratio of black belts to brown belts?

Which is bigger, 40% of 180 or ¼ of 320?

What is 3 1/6 + 8 2/9 - 1 1/2?

Describe how to transform into an expression with a rational exponent. Make sure you respond with complete sentences.

The digits 5, 6, 7, 8, and 9 are randomly arranged to form a three-digit number. (Digits are not repeated) Find the probability that the number is even and greater than 900 The probability that the three-digit number is even and greater than 900 is

An average family of 4 creates about 17.6 pounds of garbage every day. About how many pounds does one person create in a day?

Find the width of the rectangle if it's area is (3x^2 + 9xy + 6y^2) square centimeters 3x + 6y cm is at the top of the rectangle p

Jr ran 325 meters farther than dj ran. Dj ran 4.2kilometers. How many meters did jr run?

Find the 50th term in the sequence 65536, 49152, 36864, 27648 ...

Which choice is not a factor of 16 2,8,4,11

12 packs of scrunch apple juice cost three dollars after a 40% discount which equation would allow you to find the original price of the 12 pack