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In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.