1) 1/8 / 5/6 = 1/8 *6/5 = 1/4*3/5 = 3/20=0.15
2) 47 , 53, 59 , 61 , 67,71,73,79
3)18/81=2/9=0.2222
4)1 million 25 thousand 6 hundred = 1025600
5) 7 is numerator / 16 denominator
6) 30,45,60 = 3(10,15,20)=3*5(2,4) greatest common factor is 3*5=15
7)
8) 0.85
9)thirty thousand 6hundred n seventy two
10) 839*387 =324693
2006-10-06 09:21:06
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answer #2
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answered by S A 3
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1. 3/20
2. 47, 53, 59, 61, 67, 71, 73, 79
3. 2/9
4. 601,025,000
5. numerator is the 7, denominator is 16
6. 5
7. ?
8. 20/17, or 1 (and) 3/20
9. Thirty thousand six hundred seventy two
10. 320,000
2006-10-06 09:13:41
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answer #3
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answered by Cheyenne 5
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1. to divide multiply by the inverse, so 1/8 * 6/5, which is 6/40, both of which (6 and 40) can be divided by two, so it can be simplified to 3/20.
2. 46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80. all numbers that end in 2 or 5 aren't prime (because they are divisible by 2 and 5, respectively), so your left with 47,49,51,53,57,59,61,63,67,69,71,73,77,79. 51,57,63,69 are divisible by 3. 77 is divisible by 11. 49 is divisible by 7. so you have 47,53,59,61,67,71,73,79.
3.18/81. both 18 and 81 are divisible by 9, so 2/9
4.601,025,000
5.numerator 7-top, denominator 16-bottom
6.5, because they are all divisible by 5. factors of 30-1,2,3,5,10,15,30. factors of 45-1,3,5,9,15,45. factors of 50-1,2,5,10,25,50
7. 750 mi / mi/gal. multiply by inverse, 750 mi * gal/mi. 750mi/gal/mi.
8.20/17, just switch the top and the bottom
9.thirty thousand six hundred sixty two
10.839->800. 387->400. 8*4 is 32, so 32000
2006-10-06 10:11:40
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answer #4
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answered by Anonymous
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1. 3/20
2. 47, 53, 59, 61, 67, 71, 73, 79
3. 2/9
4. 601,025,000
5. numerator is the 7, denominator is 16
6. 5
7. ?
8. 20/17, or 1 (and) 3/20
9. Thirty thousand six hundred seventy two
10. 320,000
2006-10-06 09:16:34
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answer #5
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answered by guyanagyal4evr 2
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