Solve .
x varies inversely as y^2 . If x = 6 when y = 20 , find x when y = 4 .
Problem 2
Rewrite the rational expression as an equivalent rational expression with the given denominator .
(5) / (4x) = / (16x^2)
2007-08-04 09:35:36 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
x=k/y^2
6=k/400
k=2400
x=2400/16=150
(5) / (4x) = 20x / (16x^2)
2007-08-04 09:41:10 · answer #1 · answered by iyiogrenci 6 · 0⤊ 0⤋
the first one is easy
if 6 is x and 20 is y then 20 minus 4 equals six if u dont get it well thats the anwser lol
that is the only way they go together
number two i have no idea
2007-08-04 16:39:52 · answer #2 · answered by Anonymous · 0⤊ 0⤋
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2007-08-04 16:38:46 · answer #3 · answered by ☺ . CIEL . ☺ 5 · 0⤊ 0⤋
x1/x2=(y2)^2/(y1)^2
6/x2=16/400
x2=(6*400)/16=150
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5/(4x)=25/(16x^2)
2007-08-04 16:42:32 · answer #4 · answered by Anonymous · 0⤊ 0⤋