2006-11-21 12:50:04 · 10 answers · asked by DJ DUKE B 1 in Science & Mathematics ➔ Mathematics
Write the ratios as fractions:
1 ... x
-- = --
x .. 64
Cross multiply:
x² = 64
Take the square root of both sides:
x = ±8
Technically the answer is ±8, but given your answers, the correct answer is:
B) x = 8
2006-11-21 12:56:12 · answer #1 · answered by Puzzling 7 · 1⤊ 0⤋
8
2006-11-21 21:04:10 · answer #2 · answered by Gina M 1 · 1⤊ 0⤋
8
2006-11-21 20:56:47 · answer #3 · answered by Fluffy 1 · 1⤊ 0⤋
8
2006-11-21 20:52:47 · answer #4 · answered by Anonymous · 1⤊ 0⤋
1:x=x:64 x=8 1/8=8/64 1/8=1/8
2006-11-21 21:09:12 · answer #5 · answered by ibrahim s 1 · 1⤊ 0⤋
You can always write these as fractions:
1/x = x/64 , now multiply both sides by the product of the two denominators to 'clear the fraction':
64 = x^2, you can solve this, right? Note that both +8 and -8 are solutions.
2006-11-21 20:54:57 · answer #6 · answered by modulo_function 7 · 1⤊ 0⤋
1:x=x:64
here used that product of extremes equals product of means
product of extremes implies 1x64=64
product of means implies xxx=x^2
equating both we get x^2=64
x=+ or - 8
x takes the value x=8
2006-11-22 03:26:54 · answer #7 · answered by srirad 2 · 1⤊ 0⤋
first, change the ratio to a fraction (don't pay attention to the periods i added to the problem below)
1.....x
-- = --
x....64
second, cross multiply
x^2 = 64
third, solve by finding the square root of both sides
x = 8
2006-11-21 20:56:49 · answer #8 · answered by *~WhAt Up~* 2 · 1⤊ 0⤋
8, because that's the only answer that makes sense.
2006-11-21 21:11:48 · answer #9 · answered by Anonymous · 0⤊ 0⤋
x=8
man! this is wat i get for slow connection, some one beats me! lol jk
2006-11-21 20:53:21 · answer #10 · answered by Anonymous · 1⤊ 0⤋