A.1/35
B.1/21
C.1/7
D.1
i need help im not to good in algebra and i need to show the work if someone can explain it to me???
what is the value of 1/3 x 3/5 x 5/7?
2008-02-28 6:43 am
回答 (9)
2008-02-28 6:13 pm
✔ 最佳答案
15 / 105 = 3 / 21 = 1 / 7OPTION C
2008-02-28 2:48 pm
cross out the "3s" and then cross out othe "5s" and then write "=1/7." this should be sufficient work cuz its a simple problem!
2008-02-28 2:46 pm
1/7. Everything else cancels out.
2008-02-28 2:48 pm
just multiply across
C)
1*3*5=15
--------------
3*5*7 =105
15/105=1/7
C)
1*3*5=15
--------------
3*5*7 =105
15/105=1/7
2008-02-28 2:46 pm
C 1/7
The threes cancel out and the fives cancel out
The threes cancel out and the fives cancel out
2008-02-28 6:01 pm
1/3 x 3/5 x 5/7
= (1 x 3 x 5)/(3 x 5 x 7)
= 15/105
= (15 ÷ 15)/(105 ÷ 15)
= 1/7
â´ the answer is C. 1/7
= (1 x 3 x 5)/(3 x 5 x 7)
= 15/105
= (15 ÷ 15)/(105 ÷ 15)
= 1/7
â´ the answer is C. 1/7
2008-02-28 2:51 pm
First multiply the numerators (1*3*5) = 15.
Then multiply the denomanators (3*5*7) = 105
You get 15/105. Next you have to reduce the fraction. 15/15 equals 1. 105/15 equals 7. 1/7
Then multiply the denomanators (3*5*7) = 105
You get 15/105. Next you have to reduce the fraction. 15/15 equals 1. 105/15 equals 7. 1/7
2008-02-28 2:50 pm
1/7
2008-02-28 2:48 pm
just multiply top by top bottom by bottom 2 fractions at a time
1/3* 3/5=3/15*5/7=15/105=1/7
or you could cancel
3 and 3 5 and 5 your left with 1/7
1/3* 3/5=3/15*5/7=15/105=1/7
or you could cancel
3 and 3 5 and 5 your left with 1/7
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