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what is the value of a + b ?
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13 May 2017, 17:55
13 May 2017, 17:55
Expert Reply
00:00
Question Stats:
93% (00:25) correct
6% (00:51) wrong based on 48 sessions
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\(a = \frac{1}{6}\) and \(\frac{6}{7}=\frac{5}{b}\), what is the value of a + b ?
A. \(\frac{71}{210}\)
B. \(3\)
C. \(\frac{187}{42}\)
D. \(6\)
E. \(\frac{47}{6}\)
A. \(\frac{71}{210}\)
B. \(3\)
C. \(\frac{187}{42}\)
D. \(6\)
E. \(\frac{47}{6}\)
Drill 1
Question: 4
Page: 337
Question: 4
Page: 337
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Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: what is the value of a + b ?
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22 May 2017, 08:37
22 May 2017, 08:37
1
sandy wrote:
\(a = \frac{1}{6}\) and \(\frac{6}{7}=\frac{5}{b}\), what is the value of a + b ?
A. \(\frac{71}{210}\)
B. \(3\)
C. \(\frac{187}{42}\)
D. \(6\)
E. \(\frac{47}{6}\)
A. \(\frac{71}{210}\)
B. \(3\)
C. \(\frac{187}{42}\)
D. \(6\)
E. \(\frac{47}{6}\)
Drill 1
Question: 4
Page: 337
Question: 4
Page: 337
Given: 6/7 = 5/b
Cross multiply to get: 6b = (5)(7)
Simplify: 6b = 35
Solve: b = 35/6
What is the value of a + b ?
a + b = 1/6 + 35/6
= 36/6
= 6
Answer:
Show: ::
D
Cheers,
Brent
Re: what is the value of a + b ?
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04 Jun 2017, 14:46
04 Jun 2017, 14:46
Expert Reply
Explanation
Cross-multiply to find the value of b, \(\frac{35}{6}\). Then substitute in the values of a and b:
\(\frac{1}{6}+\frac{35}{6}=6\).
Hence option D is correct!
Cross-multiply to find the value of b, \(\frac{35}{6}\). Then substitute in the values of a and b:
\(\frac{1}{6}+\frac{35}{6}=6\).
Hence option D is correct!
