Need its a 3rd grader work of my niece

What are correct trigonometric ratios that could be used to determine the length of ln

Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ? a) 10n= 2.0n b) 10+n=.20n c) n+ .20n=10 d) 10n=0.20n

If eh = hg and hg=16, find the diameter of k