Which expression is equivalent to 1/3 - 1/9?

Which statement shows that 6.24 is a rational number? a. 6.24 = 6.242424 b. 6.24 = 6.24 c. 6.24 = 68⁄33 d. 6.24 = 66⁄25

The half-life of a certain material is 0.002 second. approximately how much of a 14-gram sample will be left after 0.004 second? a. 12 grams b. 3.5 grams c. 0.06 gram d. 7 grams

Atriangle on a coordinate plane is translated which is another way to write this rule? (x, y) - (x + 4. y - 8) (x, y) - (x -4.7-8) (x, y) - (x - 8, y + 4) (x, y) - (x + 8, y - 4)