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In a group of 80 students, 40 study Physics, 45 study Chemistry and 15 study
both. What is the probability that a student chosen at random from those who
do not study Chemistry studies Physics?
of
Give your answer as an exact decimal or as a fraction in its lowest terms in the
form p/q.

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?

Scenario: susan wants to make 2 square flags to sell at a crafts fair. the fabric she wants to buy is 3 meters wide. she doesn't want any fabric left over. what's the least amount of fabric she should buy? question: which equation will susan solve her problem? note: let x represent the length of 1 side of the flag. options: 1) 2x^2 = 4x 2) 8 +2x = 2(4x) 3) 2 * 2 = 4 * 2 4) 4x^2 -2x = 0

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?