Posted by Linda on Monday, March 10, 2008 at 6:48pm.
5x=1/2y1, find value of X; 1/4y=10x1, find value of Y (use substitution)

Algebra  Damon, Monday, March 10, 2008 at 7:05pm
I assume you mean:
5 x = (1/2) y  1
(1/4) y = 10 x  1
and we are to solve the two equations simultaneously using substitution and get for x first
so solve the first for x as a function of y
x = (1/10) y  1/5
use that x in the second equation to get y
(1/4) y = 10 [ (1/10)y 1/5 ]  1
y = 4 y  8  4
3 y = 12
y = 4
Now use that value of y to get x
5 x = (1/2) 4  1
x = 1/5

Algebra  kels, Tuesday, July 12, 2011 at 1:05pm
i need help in finding this answer
find the value of r so that the line through (8,R) and (4,5) has a slope of negative
Answer This Question
Related Questions
 advance algebra  use synthetic substitution to find the value of the given ...
 algebra 2  Use substitution to solve the system 3x + 7y = −3 (1) 7x + y...
 Algebra  Consider the quadratic function f(x) = – x^2 + 10x – 26. Determine ...
 algebra  use substitution to solve the linear system 3x+2y=5 4x3y=16 help plz...
 algebra  use substitution to solve the linear system 3xy=15 x+2y=2 Solve for ...
 Algebra  Use the intermediate theorem to show that the polynomial function ...
 Math  Please help me I am terrible at math, and this is my last class before ...
 Algebra  1/2x3/4y=31/2; find value of x 2x3=x3y1; find valud of y 1. ...
 algebra  1/2x3/4y=31/2; find value of x 2x3=x3y1; find valud of y 1. ...
 calculus  i am on "rolles and the mean value theorem" and was just wondering, ...
More Related Questions