What figure is a dilation of figure a by a factor of 1/2 ? note that the images are not necessarily drawn to scale. how d

Me with this one question, and i'll upvote the brainliest answer

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca