Questions on Algebra: Systems of equations that are not linear answered by real tutors!

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 Algebra: Systems of equations that are not linear Solvers Lessons Answers archive Quiz In Depth

 Question 317632: an airplane travels 2277km against the wind in 3 hours and 2667km with the wind in the same amount of time. what is the rate of the plane in still air and what is the rate of the wind? Click here to see answer by Alan3354(31518)
 Question 317632: an airplane travels 2277km against the wind in 3 hours and 2667km with the wind in the same amount of time. what is the rate of the plane in still air and what is the rate of the wind? Click here to see answer by checkley77(12569)

 Question 317837: The sum of two numbers is 32 . One number is 3 times as large as the other. What are the numbers? Click here to see answer by itiffydn(3)

 Question 317832: In a family there are two cars. The sum of the average miles per gallon obtained by the two cars in a particular week is 35 . The first car has consumed 30 gallons during that week, and the second has consumed 40 gallons, for a total of 1200 miles driven by the two cars combined. What was the average gas mileage obtained by each of the two cars in that week? Click here to see answer by josmiceli(9817)

 Question 317849: Solve using the Addition/Elimination Method 6x + 8y = 18 -3 -4y = -9 The answer I got was 0=0 always true. I'm needing a second opinion. Thank you! It's greatly appreciated. Click here to see answer by mananth(12270)

 Question 317840: A motorboat takes 4 hours to travel 192 miles going upstream. The return trip takes 2 hours going downstream. What is the rate of the boat in still water and what is the rate of the current? Click here to see answer by mananth(12270)

 Question 317833: A cyclist travels 54 miles in 6 hours going against the wind and 52 miles in 4 hours with the wind. What is the rate of the cyclist in still air and what is the rate of the wind? Click here to see answer by mananth(12270)

 Question 317964: Two rainstorms occurred in one week in a certain area. In the first storm 30mL of rain fell per hour, and in the second storm 20mL of rain fell per hour. Rain fell that week for a total of 55 hours for a total rainfall of 1250mL . How long was each storm? Click here to see answer by checkley77(12569)

 Question 318004: I am stuck on this stinking problem, I am unsure how they get 28 for the answer after adding the sum and multiplying by 10% Can anyone please help me out... The original question is this soybean meal is 14% protien, cornmeal is 7% protien, how many pounds of each should be mixed together in order to get 280 lb mixture that is 10 % protien? Let x= cornmeal and y= soy bean meal.... 0.07x+0.14y=28 Click here to see answer by Earlsdon(6294)

 Question 318561: how can i do to determinea ordered pair as solution of a system ex: x+2y^2=16 5x+6y=28 Click here to see answer by Fombitz(13828)

 Question 318487: Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y). x + 2y = 8 2x + y = 7 Click here to see answer by Fombitz(13828)

 Question 318576: how evaluate the determinant of the matrix making the equation true for: [w -5x] [-9x z]= Click here to see answer by Fombitz(13828)

 Question 318580: how evaluate the determinant of the matrix below to determine which of the following makes the equation true ex: |w -5x| |-9y z| Click here to see answer by Fombitz(13828)

 Question 318583: solve: 1/x-4/y-3/z=19 5/x+3/y-4/z=-7 3/x+1/y+3/z=-18 the second one is : write the partial fraction decomposition of an improper rational expression ex: x^2+8x/x^2+x-5 Click here to see answer by Fombitz(13828)

 Question 318704: determine whether x=3and y= -2 is a solution of 4x -2y =16 Click here to see answer by jim_thompson5910(28715)

 Question 318917: Give an ordered pair (u,v) of numbers that satisfy the following equation. u+5v=9 Click here to see answer by Fombitz(13828)

 Question 318916: The sum of two numbers is 43 and the difference is 11 . What are the numbers? Click here to see answer by stanbon(57967)

 Question 318922: Write equations for the horizontal and vertical lines passing through the point (-2,3) Click here to see answer by Fombitz(13828)

 Question 318918: The length of a rectangle is 4m longer than its width. If the perimeter of the rectangle is 44m , find its area Click here to see answer by rfer(12730)

 Question 319362: As you know my brother Jim is an avid fisherman. He varies the depth at which he fishes according to the following function: D(t) = -t2 + 10t where t is measured in hours. Estimate the time when he fishes at the greatest depth and tell me that depth. Click here to see answer by nerdybill(7003)

 Question 319866: Here we go with elimination method again, I just do not understand it at all 4x+5y=4 8x+10y=8 Thank you so much! Click here to see answer by checkley77(12569)

 Question 320456: X+3Y=6 My thought is the first set is going to be (0,2) and the next is going to be (6,0) Click here to see answer by rfer(12730)

 Question 320569: After solving a system of linear equations, how can you check your answer to determine whether it is correct? Click here to see answer by Alan3354(31518)

 Question 322385: Graph the two equations to solve the system. Write the ordered pair solution, OR write no solution or infinitely many solutions. x=3 y=4 Click here to see answer by Fombitz(13828)

 Question 323237: Mike wants to rent a car for his vacation. The rental costs \$130 a week plus \$0.20 a mile. How far to the nearest mile can Mike travel if he wants to spend \$325 at most? Click here to see answer by nerdybill(7003)

 Question 323795: What are the pros and cons in using the systems of equations for, graphing, substitution and elimination? What circumstances would be a cause to use a different method? Click here to see answer by rapaljer(4667)

 Question 323821: 1.) y = 6x^2 - 5x y = 2x + 3 2.) y = x^2 - 3x -3 y = -x^2 + 5x + 7 Click here to see answer by Fombitz(13828)

 Question 323820: The perimeter of a rectangle is 20 inches and its area is 24 square inches. What are its dimensions? Click here to see answer by Fombitz(13828)

 Question 323908: Write the equation of the line containing the points (- 4, 1) and (5,2) Click here to see answer by loraine07(3)