how would you write this as a fraction a / b , where a and b are intergers but b "=/=" 0
a) .75
b) .39 ( there is a line over 9)
2007-12-01 10:54:35 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
a) 3/4
b) .3999999=x 10x=3.9999999 10x-x=9x=3.6 x=3.6/9=36/90=12/30=6/15=2/5
which can also be written as .4
2007-12-01 11:00:01 · answer #1 · answered by Anonymous · 2⤊ 0⤋
the key to fractions, is to represent them over 100 first, and then simplify:
a. .75 = 75/100 = 3/4
b. 0.39999 = about 0.4 = 0.4/100 = 2/5
2007-12-01 19:00:48 · answer #2 · answered by PIX 4 · 0⤊ 0⤋
a) .75 = 75/100 can be simplified 3/4
b) .39 = 39/100
2007-12-01 19:00:41 · answer #3 · answered by 4ev3r 1 · 0⤊ 0⤋
3/4
0.39999999 approximately 2/5
2007-12-01 19:03:27 · answer #4 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
.75 = 3/4
The line over the 9 in 0.39 would indicate it is a recurring decimal (ie 0.399999999999999999999999999999999...)
2007-12-01 19:00:53 · answer #5 · answered by KeplJoey 7 · 0⤊ 0⤋
3/4 and 3861/9900, although the last one is possibly wrong. My Algebra days are over. . .
2007-12-01 18:59:22 · answer #6 · answered by Anonymous · 0⤊ 0⤋