Here is a figure that looks like the letter A, along with other figures. Which figures are scaled copies of the original A? Explain how you Know

Use the graph of the sine function y=2sinθ shown below

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

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose