Consider the following two regular expressions: R = a∗ + b∗; S = ab∗ + ba∗ + b ∗ a + (a ∗ b)∗. A) Find a string in r but not in s.
B) Find a string in s but not in r.
C) Find a string in both r and s.
D) Find a string in {a, b}* that is in neither r nor s.

a

step-by-step explanation:

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076

chemists are often responsible for designing a chemical reaction and analyzing the products obtained from it. one significant part of designing a chemical reaction is determining the amount of each reactant that is needed and the amount of each product that will be produced. in order to do so, chemists use stoichiometry, the quantitative relationships between reactants and products.