# 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 32606: AAI Systems charges \$12 per month plus \$6 per minute for computer information. Abacus Corporation charges \$18 per month plus \$5 per minute. For what number of minutes are charges the same? Click here to see answer by mukhopadhyay(490)

 Question 32610: An airplane flew for 4 hours with a 20 km/h tail wind. The return flight against the same wind took 5 hours. Find the speed of the plane in still air. Click here to see answer by Paul(988)

 Question 32609: A train leaves a station and travels east at 72 km/h. Three hours later a second train leaves on a parrallel track and travels east at 120 km/h. When will it overtake the first train? Click here to see answer by josmiceli(9671)

 Question 32648: xy=21 y=3x-2 could you please help me with this non-linear system of equations? I started the problem x(3x-2)=21 then I got 3x^2-2x-21=0, but I didn't know where to go from there. Thank you for your help. Click here to see answer by checkley71(8403)

 Question 32622: how do you get the y intercept form for -x +2y = -2 this comes from the nort carolina algebra 1 prentice hall mathmatics book just so u know I need help by 9:00pm today please help me Click here to see answer by checkley71(8403)

 Question 32649: xy=21 y=3x-2 could you please help me with this non-linear system of equations? I started the problem x(3x-2)=21 then I got 3x^2-2x-21=0, but I didn't know where to go from there. Question is from my homework, textbook: Stepping through college algebra one step at a time. author: Robert J Rapalje, Ed.D. Thank you for your help. Click here to see answer by Fermat(127)

 Question 32910: Find two consecutive integers such that the sum of 2 times the first integer and 4 times second integer is 46. Click here to see answer by Paul(988)

 Question 32929: Solve the equation. 4x-1 / x^2+5x-14 = 1/x-2 - 2/x+7 Solve the system of equations. 1.) y= -5x-2 y= -3x 2.) 3x - y = 5 -4x + y = -5 3.) 2x - y = -1 2x + z = -6 3y - z = 7 I really need help on these problems I have done these problems over and over again until I am getting frustrated with myself. I need help. I am not sure if you are supposed to plug in the -3x into the other problem in question one. I am not sure if you are supposed to just add the x and y values and then solve for y in problem 2. Are you supposed to use cramers rule for problme three. Please help me I am struggling with these problems. I need somebody to help understand the process of each problem so I will understand the problems come test time on Monday. Thanks for your time and help it is greatly appreciated. Hilary Click here to see answer by checkley71(8403)
 Question 32929: Solve the equation. 4x-1 / x^2+5x-14 = 1/x-2 - 2/x+7 Solve the system of equations. 1.) y= -5x-2 y= -3x 2.) 3x - y = 5 -4x + y = -5 3.) 2x - y = -1 2x + z = -6 3y - z = 7 I really need help on these problems I have done these problems over and over again until I am getting frustrated with myself. I need help. I am not sure if you are supposed to plug in the -3x into the other problem in question one. I am not sure if you are supposed to just add the x and y values and then solve for y in problem 2. Are you supposed to use cramers rule for problme three. Please help me I am struggling with these problems. I need somebody to help understand the process of each problem so I will understand the problems come test time on Monday. Thanks for your time and help it is greatly appreciated. Hilary Click here to see answer by stanbon(57307)

 Question 32993: Divide: x^2 + 12x + 35/x^2 + 4x - 5 / x^2 + 3x - 28 / x-1 Find (f + g)(7) when f(x)= x + 5 and g(x)= -x^2 - 6 I tried wroking out the first problem and kept getting (x+5)/(x+5)(x+4) Im not sure if the x+5 cancels and leaves x+4. Please help. And for the second problem im confused on what to do. Please help. Click here to see answer by stanbon(57307)

 Question 32990: Can you help me to explain the following: - The formula for measuring sound. - Pick a specific sound, give the decibels of the sound, and explain what this measurement means. Thank you. Click here to see answer by stanbon(57307)

 Question 33434: Write the slope-intercept form of the equation of the line passing through the point (-2,3) and paralley to the line y=-5x-4. Click here to see answer by sarah_adam(201)

 Question 33377: The volume of a cylinder is given by V = πr^2h where r is the radius of the cylinder and h is the height of the cylinder. Suppose the volume of the can is 100 cubic centimeters. a) Write h as a function of r. b) What is the measurement of the height if the radius of the cylinder is 2 centimeters? c) Graph this function. Click here to see answer by stanbon(57307)

 Question 33379: An open-top box is to be constructed from a 6 by 8 foot rectangular cardboard by cutting out equal squares at each corner and the folding up the flaps. Let x denote the length of each side of the square to be cut out. a)Find the function V that represents the volume of the box in terms of x. b)Graph this function. c)Using the graph, what is the value of x that will produce the maximum volume? Click here to see answer by mukhopadhyay(490)

 Question 33375: I need to find the coordinates and graph, can someone please help?……. For a fixed rate, a fixed principal amount, and a fixed compounding cycle, the return is an exponential function of time. Using the formula, A= P(1+ r/n)^ nt, let r = 10%, P = 1, and n =1 and give the coordinates (t, A) for the points where t = 0, 1, 2, 3, 4. Click here to see answer by algebrapro18(206)

 Question 33798: This is a systems of equations problem and I need to solve for x,y,z. I do not how to get any of the variables or what steps to take to get the answers. The problem: 2x-5y+ ___=-22 __+y+3z=10 x+___+8z=15 The underscores represents blanks or O If this had to be an augmented matrix, how would I do that and get those variables? Click here to see answer by venugopalramana(3286)

 Question 34285: How do I complete the square of x^2-x-20=0 to the nearest hundredth? Click here to see answer by stanbon(57307)

 Question 34394: I am not sure how to solve this problem when there is a x^3 x^3 + y = 0 x^2 - y + 0 Click here to see answer by checkley71(8403)

 Question 34505: How do you solve this problem (0,4),(2,8) & (3,1) to get the quadratic equation by solving systems of Three Linear Equations to find quadratic equations? Click here to see answer by venugopalramana(3286)

 Question 34661: A pharmacist needs 6 oz of a 30% codeine solution, but he only has bottle of 20% and 50% codeine solutions. Find how many ounces from each bottle should be mixed for this prescription. Click here to see answer by Paul(988)

 Question 34715: I need help with this one. Determine the equation: a hyperbola with foci (+-3,0)and x-intercepts (+-2,0). Any help is appreciated. Thanks jp isbn 0-201-75526-2 Click here to see answer by venugopalramana(3286)

 Question 34773: Solve 4x^2 - y^2 = 4 4x^2 + y^2 = 4 Click here to see answer by checkley71(8403)

 Question 35015: Ok right now in algebra class we are learning about "standard form" w/ linear equations.. i don't really understand how to slove and i keep getting it wrong.. the formula for solving & answering it is Ax+By=C. Why i keep getting it wrong is when i do the problem, it always comes out as (example) 6=3x+5y, when it SHOULD come out to 3x+5y=6.. I just dont understand how i am solving it wrong!! help!! Click here to see answer by stanbon(57307)

 Question 32621: Find the values of the six trigonometric functions of an angle O-(slash is through the circle) in standard position whose terminal side passes through point P. P(3,-4) Click here to see answer by stanbon(57307)

 Question 36431: solve for the ordered pair 2x-y= 5 y= 3x-4 I got x= 9/5 y=-7/5 Click here to see answer by checkley71(8403)

 Question 36432: 3x-4y=8 y= 3/4x-2 I got 3x-4{3/4x-2}=8 3x-3x=16 I have no varible left? Is that right? Click here to see answer by checkley71(8403)
 Question 36432: 3x-4y=8 y= 3/4x-2 I got 3x-4{3/4x-2}=8 3x-3x=16 I have no varible left? Is that right? Click here to see answer by Earlsdon(6287)

 Question 36516: solve the no-linear equation: x+y =7 x^2+ y^2=25 Click here to see answer by checkley71(8403)