Mathematics, 20.09.2019 03:30 anthonymcnulty6471
This problem addresses some common algebraic errors. for the equalities stated below assume that x and y stand for real numbers. assume that any denominators are non-zero. mark the equalities with t (true) if they are true for all values of x and y, and f (false) otherwise.(x+y)^2 = x^2 + y^2.(x+y)^2 = x^2 + 2xy+y^2.x/ (x+y)= 1/y. x-(x+y) = y. sqrt{x^2} = x. sqrt{x^2} = |x|.sqrt{x^2+4} = x+2.1(x+y) = 1/x + 1/y.
Answers: 1
Mathematics, 21.06.2019 12:30
Aschool typically sells 500 yearbooks each year for 50 dollars each. the economic calls does a project and discovers that they can sell 100 more yearbooks for every $5 decrease in price. the revenue for yearbook sales is equal to the number of yearbooks sold times the price of the yearbook. let x represent the number of $5 decrease in price. if the expression that represents the revenue is written in the form r(x)=(500+ax)(50-bx). to maximize profit, what price should the school charge for the yearbooks? what is the possible maximum revenue? if the school attains the maximum revenue, how many yearbooks will they sell?
Answers: 3
Mathematics, 21.06.2019 13:00
Which statement best describes a square? a. a special rectangle that has four right angles b. a special trapezoid that has four sides of equal length c. a special rectangle that has four sides of equal length d. a special trapezoid that has four right angles
Answers: 1
Mathematics, 21.06.2019 15:00
What are the relative frequencies to the nearest hundredth of the columns of the two-way table?
Answers: 2
Mathematics, 22.06.2019 01:00
The balance of susu's savings account can be represented by the variable b. the inequality describing her balance b > $30 . which could be a solution to the inequality?
Answers: 2
This problem addresses some common algebraic errors. for the equalities stated below assume that x a...
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