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joja [24]
3 years ago
14

A student solved this problem and said the answer was 3 feet. Gina had two pieces of ribbon. One was foot long and the other was

foot long. What was the total length of both pieces of ribbon combined? Is the student's answer reasonable?
Mathematics
2 answers:
enyata [817]3 years ago
8 0
That could be possible if your feet are 1.5 feet long.
Nana76 [90]3 years ago
3 0
The total combined length is 2 feet
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Lyrx [107]

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x + 5 * 4


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BioTeacher101

3 0
3 years ago
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Joe can cut and split a cord of firewood in 3 fewer hours than Dwight can. When they work​ together, it takes them 2 hours. How
aalyn [17]

Answer:

Dwight will take 6 hours to finish the job alone and Joe will take 3 hours to finish the job alone.

Step-by-step explanation:

Let us assume the time taken by Dwight to split a cord of firewood  = K hrs

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As, Joe uses 3 LESS hours then Dwight.

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So, the per hour rate of Joe  = (\frac{1}{K-3})

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⇒ Per hour rate of ( Dwight  + Joe)  =(\frac{1}{2} )

\implies (\frac{1}{K}) +  (\frac{1}{K-3}) = (\frac{1}{2})

Now, solving for the value of K , we get:

(\frac{1}{K}) +  (\frac{1}{K-3}) = (\frac{1}{2})\\\implies  \frac{(K-3) + K}{K (K-3)}  = (\frac{1}{2})\\\implies 2(2K -3) = K^2 - 3K\\\implies k^2 - 3K -4K +6 = 0\\\implies K^2 - 7K  + 6=  0\\\implies K^2 - 6K - K  + 6=  0\\\implies K(K-6) -1(K - 6)=  0\\\implies (K-6)(K-1) = 0

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⇒ K  = 6 hours

Hence, Dwight will take 6 hours to finish the job alone and Joe will take (k-3) = (6-3) = 3 hours to finish the job alone.

8 0
2 years ago
What is 10a - 5b if a = 25 and b = 3​
AURORKA [14]

Answer:

\boxed{235}

Step-by-step explanation:

<em>Hey there!</em>

Well given that,

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Hello : 
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