Mathematics, 19.07.2019 12:00 claudiasfandom
Ihad the question: "four points a, b, c and d lie on the curve with equation y = x^2. prove that abcd is never a parallelogram." i have a proof but i don't really think it's strong enough: co-ordinates for points of the parallelogram from left to right: (x3, y2), (x1, y1), (x4, y2), (x2, y1) y1 = x1^2 y1 = x2^2 y2 = x3^2 y2 = x4^2 x1 > x3 x2 > x4 x1^2 = x2^2 x1 ± x2 x3^2 = x4^2 x3 ± x4 as they are all different points: x1 = -x2 and x3 = -x4 or -x1 = x2 and -x3 = x4 so: x1 > x3 and -x1 > -x3 but x1 > x3 is equivalent to -x1 < -x3 -x1 > -x3 and -x1 < -x3 can't both be true therefore: abcd will never be a parallelogram is that valid? or could i make it stronger?
Answers: 1
Mathematics, 21.06.2019 20:30
Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.
Answers: 2
Mathematics, 21.06.2019 22:10
Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe
Answers: 3
Ihad the question: "four points a, b, c and d lie on the curve with equation y = x^2. prove that ab...
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