mat/simultaneous equation

2x-5y=13, 5x-3y= -15 can anyone show me how to find out the value of x , y please,thanks

  1. 👍 0
  2. 👎 0
  3. 👁 90
asked by wan
  1. I would use elimination here

    1st times 3 ---> 6x - 15y = 39
    2nd times 5 --> 25x - 15y = -75
    subtract them:
    -19x = 114
    x = -6

    back into 1st
    -12 - 5y = 13
    -5y = 25
    y = -5

    x = -6 , y = -5

    1. 👍 0
    2. 👎 0
    posted by Reiny

Respond to this Question

First Name

Your Response

Similar Questions

  1. arithmetic

    1. The first and last term of an A.P are, a and l respectively, show that the sum of nth term from the beginning and nth term from the end is a + l. 2. If mth term of an A.P be 1/n and nth term be 1/m, then show that its mnth term

    asked by kartik hans on May 24, 2014
  2. arithmetic

    1. The first and last term of an A.P are, a and l respectively, show that the sum of nth term from the beginning and nth term from the end is a + l. 2. If mth term of an A.P be 1/n and nth term be 1/m, then show that its mnth term

    asked by kartik hans on May 23, 2014
  3. Art of Research

    I need to do an interview segment for a "show green", which is a storyboard for a TV show. It will include production notes as well. My topic for this show green is on the business of the National Hockey League, in terms of their

    asked by Alex L. on November 21, 2013
  4. calculus

    use the intermediate value theoremto show that the polynomial function has a zero in the given interval f(x)=x^5-x^4+8x^3-5x^2-14x5;[1.4;1.5] find the value of f (1.4)= find the value of f (1.5)= show work, thanks

    asked by Julienne on December 30, 2012
  5. Math, Algebra

    I asked these questions yesterday and thanked whomever helping me before clicking the links. When the links were just google searches, however, they didn't help me seeing as I already did that. The google search calculator doesn't

    asked by Frustrated Further on April 4, 2017
  1. calculus

    1. Find the area of the region bounded by f(x)=x^2 +6x+9 and g(x)=5(x+3). Show the integral used, the limits of integration and how to evaluate the integral. 2. Find the area of the region bounded by x=y^2+6, x=0 , y=-6, and y=7.

    asked by katarina on May 15, 2012
  2. Math

    Make a table to show the sample space and find the number of outcomes. Then find the probability. A theater uses a letter to show which row a seat is in, and a number to show the column. If there are eight rows and ten columns,

    asked by SonicFanboy2013 on February 24, 2020
  3. Math, Algebra (fast help would be nice)

    So I did this whole math test and before I could hit "finish", my computer died and nothing saved. I have no memory of how I figured them out. Could you guys help please? Find the lateral area of the square pyramid. Show all

    asked by MathMakesMeDie on April 3, 2017
  4. College Algebra

    How to find the values of x,y and z and to show the condition stated below? 2yz + zx − 5xy = 2 yz − zx + 2xy = 1 yz − 2zx + 6xy = 3 Show that xyz = ±6 and find all possible values of x, y and z.

    asked by Darone on October 11, 2014
  5. Calculus rate of change

    Can you please check my answers and fix the ones if any that are wrong. Along with help on part d Consider the following fun f(x)=(3/4)x^3- x^3-3x^2+6x A.find relative extrema and identify max and min. I got x=1 max ,±√2 min

    asked by Nicole on July 18, 2016
  6. algebra

    Find the inverse of the following function. Find the domain, range, and asymptotes of each function. Graph both functions on the same coordinate plane -x/3 f(x)=4+e ( if this makes sense, not sure how else to show it. the -x/3 is

    asked by samantha on August 28, 2012

More Similar Questions