Author's latest answers

Annual salaries for graduates are expected to be between $30,000 and $45,000. Assume that a 95% confidence interval estimate of the population mean annual sling salary is desired. How large a sample should be taken if the desired margin of error is $250.

Consider a polygonal f: R → R, formed by 8 segments with vertices (Vi; Wi), 1 ≤ i ≤ 7. What metric relations between the coordinates of these vertices must occur and what characteristics must the rays of the extremes satisfy to guarantee that this Is polygonal the result of a combination of translations and modules applied to a linear function?

The company BMK presents the following costing data: Finished production: 5,000 units. Production sold: 4,100 units. Sale price $1,730 each unit. Income tax 27% Period costs: Variable costs and expenses of the period MPD $170 per unit MOD $310 per unit CIF $145 per unit Other costs and fixed expenses of the period: CIF $700,000 Administration expenses $1,200,000 Sales expenses $900,000 It is requested: Calculate the total production cost, the unit cost and prepare the Statement of Result both by the absorbent method and the variable method.

Perform the exercise either by graphic method, branching and dimensioning or by cutting planes Max z = 2X1 + X2 5X1 + 2X2 ≤ 10 X1, x2 ≥ 0, integers

Is the function 𝑧 = 𝑓(𝑥,𝑦) = 2ln⁡(𝑥) + 2ln⁡(𝑦) − 𝑥𝑦 concave or convex? What is the domain of the function? And your image?

The total power contained in an AM signal is 1000W. Determine the power transmitted on the carrier frequency and on each of the side panels when the percentage modulation is 100%.

A self-employed worker's monthly income for the past six months was fit to the function 𝑖(𝑡) = 5 + 10𝑡0.5 − 0.1𝑡 + 0.5𝑡−0.25, while his expenses were fit to 𝑔(𝑡) = 4𝑡0. 5 + 0.2𝑡 + 2. What is the mathematical expression that allows you to express your net savings, if these correspond to income - expenses? What has been the savings you have achieved in the last two months?

1) The university library purchased books on macroeconomics, microeconomics and statistics. She devoted €500 to the purchase of macroeconomics books (unit price €50), €1000 to the purchase of microeconomics books (unit price €50) and €500 to the purchase of statistics works (unit price €25). The average price of a work is: (A) €40 (b) €38 (c) €35 (d) €41.6

The probability that Maria is carrying the Language and Literature book is 45% and that she is carrying the Economy is 60%. The probability that he carries at least one of the two books is 80%. a) What is the probability that he does not have any books? b) If you have brought the Language and Literature book, what is the probability that you have not brought the Economics book?

If log base 2 (3) + log base 3 (4) + ...... log base x (x+1) = 7, what is x?