Which expression is equal to 27 ?
(A) 2 x 7
(B) 3 x 3
(C) 3 x 3 x 3
(D) 2 x 2 x 2 x 2 x 2 x 2 x 2

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?