There are 4 red marble, 2 blue marbles, 3 green marbles, and 10 yellow marbles. what is the the probability of drawing a blue or a red marble? (enter as a decimal rounded to 4 places)

In what organelle does photosynthesis take place?

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 .is he correct? explain why or why not

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?