In a class of 20 students the average age of all the students is 16 years. The oldest student exactly 16 year old. What us the average of the youngest student.

Lcm of 14, 21 and 28

if the length of a rectangle is increased by 30% and the width of the same rectangle is decreased by 30% what is the effect on the area of the rectangle? It is increased by 60% it is unchanged it is decreased by 15% it is decreased by 9%

Sela put 6 times as many coins now as she had 4 months ago. if sela has 240 coins now, how many did she have 4 months ago

Alex container of cranberry juice holds 200 milliters. harrys container holds 7/8 as much juice. how many milliliters of cranberry juice does harrys container hold?

What is 20% written as a decimal

Fine the length of the hypotenuse of a Right triangle with legs pf 20cm and21cm

One nanometer is about 0.00000003937 of an inch. what is this number in scientific notation?

How to graph 200-25x=y

Simplify 11-4 (0.2) + 2

What is a1 of the arithmetic sequence for which a3=126 and a64=3,725