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Bumek [7]
2 years ago
11

Kelsey painted one-fourth of her bedroom in three-sevenths of an hour. At this rate, how long would it take her to paint the ent

ire room?
A 3/28 of an hour
B 28/3 of an hour
C 12/7 of an hour
D 7/12 of an hour
Mathematics
1 answer:
malfutka [58]2 years ago
5 0
12 Over seven of an hour
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Lowest denominator 1/15 9/5 3/8
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<span>LCD(<span>115</span>, <span>95</span>, <span>38</span>) = LCM(15, 5, 8) = 23×3×5 = 120</span>
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Helga [31]
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2 years ago
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now, for the other, we use the same cancellation rule

\bf ln(3x)=6\iff log_e(3x)=6\implies e^{log_e(3x)}=e^{6}&#10;\\\\\\&#10;3x=e^6\implies x=\cfrac{e^6}{3}
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