A solution of the equation 4x=10-cy is (5, -2). What is the value of c?
2007-07-23 12:24:05 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
4x = 10 - cy
when x = 5, y = -2,
4(5) = 10 - c(-2)
20 = 10 + 2c
2c = 10
c = 5
2007-07-24 02:57:42 · answer #1 · answered by Anonymous · 0⤊ 0⤋
if 5=x and -2=y then c=5
2007-07-23 12:37:18 · answer #2 · answered by cecilia m 1 · 0⤊ 0⤋
The answer is A. infinitely Why? Well, let's lookat that equation closely: 11x - 99 = 11(x - 9) If we use the Distributive proberty and multiply the numbers on the right side of the equation, we'll get: 11(x - 9) = 11x - 99 You should now see that both sides of the equation are identical, which means that there isn't just 1 answer, or 2 answers. It's infinity! I'm in 6th grade and I could do this :)
2016-05-21 05:18:45 · answer #3 · answered by ? 3 · 0⤊ 0⤋
20 = 10 + 2c
2c = 10
c = 5
2007-07-25 00:01:57 · answer #4 · answered by Como 7 · 0⤊ 0⤋
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Rewrite the equation to
c = (10 - 4x)/y
Plug in the values (5, -2)
c = (10 - 4(5))/-2 = -10/-2 = 5
2007-07-23 12:31:20 · answer #5 · answered by sweetwater 7 · 0⤊ 0⤋
4(5)=10-c(-2)
20= 10+2c
10=2c
5=c
I believe that is correct. The 2 negatives (-c and -2) should make it a positive number.
2007-07-23 12:36:46 · answer #6 · answered by Anonymous · 0⤊ 0⤋
4*5=10-c*(-2),
20=10+2c,
c=5
2007-07-23 12:33:17 · answer #7 · answered by nasser a 2 · 0⤊ 0⤋
You could go to HOTMATH.com. They have many answers from many books. you can also go to Yahoo Education on the top right is homework help
2007-07-23 12:33:15 · answer #8 · answered by Savriti 2 · 0⤊ 0⤋
-.277.....
2007-07-23 12:32:42 · answer #9 · answered by Anonymous · 0⤊ 0⤋