Wyzant Answershttps://www.wyzant.com/resources/answersAsk questions and get free answers from professional tutorsMon, 27 Mar 2017 20:58:53 -0500https://www.wyzant.com/images/logos/wyzant-logo.pngWyzant Answershttps://www.wyzant.com/resources/answershttps://www.wyzant.com/resources/answers534525https://www.wyzant.com/resources/answers/295705/quadratic_problem_solvingAn from Schenectady, NYhttps://www.wyzant.com/resources/answers/users/view/86485593Quadratic EquationsQuadratic Problem Solving <div>A rectangular box has a square base and its height is 1cm longer than the length of one side of its base.</div>
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<div>a) If xcm is the length of one side of its base, show that its total surface area, A is given by A=6x^2+4x cm^2</div>
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<div>b) If the total surface area if 240cm^2, find the dimensions of the box </div>Mon, 27 Mar 2017 20:56:27 -05002017-03-27T20:56:27-05:00534523https://www.wyzant.com/resources/answers/295703/unit_circle_questionAngelica from Abingdon, MDhttps://www.wyzant.com/resources/answers/users/view/86872929Unit CircleAlgebra 2Helpful TipsMath HelpTrigonometryUNIT circle question <div>An equilateral triangle is inscribed in the unit circle. find the exact perimeter of the equilateral triangle.</div>Mon, 27 Mar 2017 20:54:33 -05002017-03-27T20:54:33-05:00534522https://www.wyzant.com/resources/answers/295701/discriminant_of_quadraticAn from Schenectady, NYhttps://www.wyzant.com/resources/answers/users/view/86485593Discriminantdiscriminant of quadratic <div>Find discriminant of - root 2 *x^2-5x+2m=0</div>Mon, 27 Mar 2017 20:53:29 -05002017-03-27T20:53:29-05:00534518https://www.wyzant.com/resources/answers/295697/a_solution_must_contain_2_acetic_acid_if_24_ounces_of_acid_are_available_how_much_solution_can_be_madDeborah from Mesquite, TXhttps://www.wyzant.com/resources/answers/users/view/86873336Word ProblemA solution must contain 2% acetic acid. If 24 ounces of acid are available, how much solution can be mad<div>A solution must contain 2% acetic acid. If 24 ounces of acid are available , how much solution can be made</div>
<div> </div>Mon, 27 Mar 2017 20:43:55 -05002017-03-27T20:43:55-05:00534516https://www.wyzant.com/resources/answers/295695/my_grandmother_criticized_me_for_binge_watching_something_i_ve_done_for_years_when_in_not_hanging_out_with_friends_or_doing_college_workNikki from Ruston, LAhttps://www.wyzant.com/resources/answers/users/view/86873335Family SupportPROBLEM SOLVINGAnxietyMy grandmother criticized me for binge watching, something I ve done for years when in not hanging out with friends or doing college work?<div>She said I was crazy so I started doing ridiculous things shutting my door in the evening because I have to wait to watch what I want, waiting till she leaves, and watching tv on mute. I ve barely gotten to watch anything in the past few months. I hang out with friends, do my college work but tv shows are my hobby. I like to read and listen to music also, but I miss movies and tv. I m in college and have no money to move out. What should I do?</div>Mon, 27 Mar 2017 20:43:20 -05002017-03-27T20:43:20-05:00534515https://www.wyzant.com/resources/answers/295693/let_r_be_the_region_bounded_by_the_graphs_of_y_sinx_and_y_1_2_as_shown_in_the_figure_aboveMelissa from San Francisco, CAhttps://www.wyzant.com/resources/answers/users/view/86873329MathLet R be the region bounded by the graphs of y=sinx and y=1/2 as shown in the figure above. <div>Let R be the region bounded by the graphs of y=sinx and y=1/2 as shown in the figure above. a)Find the area of R. b) Write and evaluate an integral expression that gives the volume of the solid generated when R is revolved around the x-axis. c) The region R is the base of a solid. For each x in region R, the cross sections of this solid, perpendicular to the x-axis, are semicircles. Write and evaluate an integral expression that gives the volume of this solid. Answers: a)0.684 or 0.685 b) 3.005 c) 0.106 or 0.107</div>Mon, 27 Mar 2017 20:39:11 -05002017-03-27T20:39:11-05:00534514https://www.wyzant.com/resources/answers/295691/why_do_we_check_derivative_of_x_gt_0_while_determining_the_length_of_the_curve_involving_the_parametric_equationsSagar from Cincinnati, OHhttps://www.wyzant.com/resources/answers/users/view/86873322Parametric Equationswhy do we check derivative of x >0 while determining the length of the curve involving the parametric equations<div>It is from CALC2 chapter parametric functions.</div>
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<div>While determine the arc length of a function involving parametric equations, why do we check for the derivative of x to be greater than 0 . Moreover, why don't we check this condition for determining the area under the curve</div>Mon, 27 Mar 2017 20:36:33 -05002017-03-27T20:36:33-05:00534513https://www.wyzant.com/resources/answers/295689/two_integers_have_a_sum_of_2_the_difference_of_the_lesser_integer_and_the_greater_integer_is_2_the_sum_of_the_absolute_values_of_the_integers_is_2_what_areCJ from Silverdale, WAhttps://www.wyzant.com/resources/answers/users/view/86732869Subtracting IntegersTwo integers have a sum of -2. The difference of the lesser integer and the greater integer is -2. The sum of the absolute values of the integers is 2. What are<div>This is a 6th grade math question.</div>Mon, 27 Mar 2017 20:33:56 -05002017-03-27T20:33:56-05:00534512https://www.wyzant.com/resources/answers/295687/what_is_quot_x_quot_7x_2x_8x_33Kimberly from Lapeer, MIhttps://www.wyzant.com/resources/answers/users/view/86873310AlgebraWhat is "x" -7x+2x+8x=-33<div>I can't figure out what "x" is. </div>Mon, 27 Mar 2017 20:33:16 -05002017-03-27T20:33:16-05:00534509https://www.wyzant.com/resources/answers/295685/mixture_problemCarolyn from Hagerstown, MDhttps://www.wyzant.com/resources/answers/users/view/86776784Mixture problem<div>how many ounces of a 30% alcohol must be mixed with 14 ounces of a 35% solution to make a 32% alcohol solution? </div>Mon, 27 Mar 2017 20:24:40 -05002017-03-27T20:24:40-05:00534506https://www.wyzant.com/resources/answers/295683/simplex_tableau_word_problemSarah from Chicago, ILhttps://www.wyzant.com/resources/answers/users/view/86873278Linear AlgebraMathSimplex MethodSimplex TableauSimplex Tableau (word problem)<div>A Gamestop sells the following consoles: PS4's, XboxOne's, and Nintendo Switches. For each PS4 it stocks, it needs to have 6 games on hand, for each XboxOne it needs to have 5 games, and for each Switch it needs 10 games. They want to have at most 2100 games on hand. The store wants to stock at most 300 consoles in total. The revenue from each console is $300 per PS4, $400 per XboxOne, and $600 per Switch.</div>
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<div>List all the constraints for the linear programming problem.</div>
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<div>Introduce slack variables and create the simplex tableau.</div>
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<div>Using the tableau and your calculator, nd the amount of each console that the store should stock to maximize revenue.</div>
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<div> </div>Mon, 27 Mar 2017 20:11:37 -05002017-03-27T20:11:37-05:00534504https://www.wyzant.com/resources/answers/295679/if_z_3_y_then_zChloe from Woodstock, GAhttps://www.wyzant.com/resources/answers/users/view/86734291MathIf z^3=y; then z= <div>HELP PLEASE</div>Mon, 27 Mar 2017 20:08:58 -05002017-03-27T20:08:58-05:00534501https://www.wyzant.com/resources/answers/295677/derek_invested_1500_into_an_account_that_pays_9_interest_compounded_mothly_how_long_must_the_money_be_left_in_the_account_for_it_to_grow_2147_11Joselynn from Raymore, MOhttps://www.wyzant.com/resources/answers/users/view/86873267Compound InterestDerek invested $1500 into an account that pays 9% interest compounded mothly how long must the money be left in the account for it to grow $2147.11<div> Find the amount of time it takes to reach 2147.11</div>Mon, 27 Mar 2017 20:06:59 -05002017-03-27T20:06:59-05:00534499https://www.wyzant.com/resources/answers/295675/got_a_chemistry_stoichiometry_problem_please_helpJake from Ellwood City, PAhttps://www.wyzant.com/resources/answers/users/view/86873261ChemistryStoichiometeryStoichiometryGot a Chemistry Stoichiometry Problem.. Please Help!<div>Question: The final step in manufacture of pure platinum (for use in automobile catalytic converters and other purposes) is the decomposition reaction of (NH4)2PtCl6. In addition to the solid metal, the following gaseous byproducts are also formed: ammonium chloride, nitrogen, and hydrogen chloride. If 6.2g of platinum is desired, but the reaction gives only an 85% yield, how many grams of (NH4)2PtCl6 are required?</div>Mon, 27 Mar 2017 20:01:52 -05002017-03-27T20:01:52-05:00534493https://www.wyzant.com/resources/answers/295673/how_many_small_cubes_are_needed_to_completely_fill_a_right_rectangular_prism_with_dimensions_of_4_1_2_x_5_x_3_3_4Brigid from Center, COhttps://www.wyzant.com/resources/answers/users/view/86873224Math Word ProblemVolume Of A Rectangle PrismHow many small cubes are needed to completely fill a right rectangular prism with dimensions of 4 1/2 x 5 x 3 3/4?<div>What I am asking is that I need a lot of help solving this. I need it completely filled with no extra space.</div>Mon, 27 Mar 2017 19:43:36 -05002017-03-27T19:43:36-05:00534490https://www.wyzant.com/resources/answers/295671/thermodynamics_problem_please_helpAnnie from Cumming, GAhttps://www.wyzant.com/resources/answers/users/view/86849608ChemistryThermodynamicsThermodynamics problem. Please help!!<div> A student takes a Styrofoam cooler in fills it with 2.00 L of water. He then adds a small amount of sodium to it and it reacts according to the equation below. The initial temperature of the water is room temperature, 23.9°C, and the temperature of the water after the reaction is complete is 25.8°C. The reaction takes place at 0.987 atm pressure and produces 1.968 L of hydrogen gas.</div>
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<div>2Na(s) + 2 H2O(l) -> 2Na(aq) + H2(g)</div>
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<div>1. Determine the amount of heat absorbed or released by the reaction. </div>
<div>2. Calculate the work for this reaction. </div>Mon, 27 Mar 2017 19:26:24 -05002017-03-27T19:26:24-05:00534487https://www.wyzant.com/resources/answers/295669/if_i_sold_sandwiches_for_0_40_and_was_getting_payed_10_50_per_hour_how_many_sandwiches_would_i_have_to_sell_during_a_6_hour_shift_to_earn_125Sydney from Seattle, WAhttps://www.wyzant.com/resources/answers/users/view/86873177if i sold sandwiches for $0.40 and was getting payed $10.50 per hour how many sandwiches would i have to sell during a 6-hour shift to earn $125<div>if i sold sandwiches for $0.40 and was getting payed $10.50 per hour how many sandwiches would i have to sell during a 6-hour shift to earn $125</div>Mon, 27 Mar 2017 19:10:54 -05002017-03-27T19:10:54-05:00534484https://www.wyzant.com/resources/answers/295667/if_there_are_7_48_gallons_in_a_cubic_foot_how_many_gallons_of_water_does_the_aquarium_holdKyle from Jacksonville, FLhttps://www.wyzant.com/resources/answers/users/view/86873168GeometryCylindersIf there are 7.48 gallons in a cubic foot, how many gallons of water does the aquarium hold? <div>The aquarium has a volume of around 35328.78in squared.</div>Mon, 27 Mar 2017 19:04:51 -05002017-03-27T19:04:51-05:00534479https://www.wyzant.com/resources/answers/295663/laura_must_choose_a_number_between_61_and_107_that_is_a_multiple_of_58_and_10_write_all_the_numbers_that_she_could_choose_if_there_is_more_than_oneDestiney from Rialto, CAhttps://www.wyzant.com/resources/answers/users/view/86873150Math HelpMathLaura must choose a number between 61 and 107 that is a multiple of , 58, and 10 . Write all the numbers that she could choose. If there is more than one <div>i need help figuring out this problem </div>Mon, 27 Mar 2017 18:51:48 -05002017-03-27T18:51:48-05:00