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Reika [66]
3 years ago
9

A hiker is going to hike a mountain where there are four trails to the top of the mountain. In how many different ways can a per

son hike up and down the mountain
Mathematics
1 answer:
zhannawk [14.2K]3 years ago
3 0

Answer: 10

Step-by-step explanation:

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Ten times the sum of half a number and 6 is 8
KATRIN_1 [288]

Even though we don't know the number yet, we need to give it some kind of label
so that we can work with it.  We can call it anything.  I'd like to call it ' G '.

The number we're looking for is ' G '.

Half of it is  1/2 G

The sum of that and 6 is          1/2 G + 6

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The question says that's 8.
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Divide each side by  10 :                1/2 G + 6  =  0.8

Subtract  6  from each side:            1/2 G  =  - 5.2

Multiply each side by  2 :                        G  =  - 10.4

That seems like a weird answer.  We should check it.

The number:                                         -10.4
Half the number:                                   - 5.2
The sum of half the number and 6:      -5.2 + 6 = +0.8
Ten times that sum:                                                  8

Yep !  By golly, sho nuff, dV-dT and E to the X !  
Everything checks out, and the mystery number is      - 10.4

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What is the slope of the line that contains the points (-6,-2) and (3,-2)
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Required slope = 0
3 0
3 years ago
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