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KengaRu [80]
3 years ago
6

13x - 7 = 136 11 15 8 9

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
6 0
<span>Simplifying the answer:


x = 11</span>
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Two workers finished a job in 12 days. How long would it take each worker to do the job by himself if one of the workers needs 1
FromTheMoon [43]

Answer:

20 days

Step-by-step explanation:

t = time required by one worker to complete the job alone

(t+8) = time required by the other worker

So:

7.5/ t + 7.5/ (t + 8) = 1

Solve for t.

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t = 12 days, the first guy working alone

The other worker would finish the job in 20 days.

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A number is chosen at random from 1 to 25. Find the probability of selecting an odd number or multiples of 5. *
Ymorist [56]

Answer:

Odd number: 13/25 (52%)

Multiples of 5: 5/25 (20%)

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There are 13 odd numbers between 1 and 25 so you have a 13/25 chance which is 52% (13/25 = 0.52). There are 5 multiples of 2 between 1 and 25 so you have a 5/25 chance which is 20% (5/25 = 0.2).

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3 years ago
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A jogger goes half a mile north and then turns west. If the jogger finishes 1.3 miles away from the starting point, how far west
Ratling [72]
In order to solve this problem, you must draw a right triangle first to help you visualize the path of the jogger. 
You are given 0.5 miles north (which will be the height of the right triangle), and 1.3 miles (which will be the hypotenuse of the triangle). 
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0.5² + b² = 1.3²
b = 1.3²-0.5²
b = 1.2 miles
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3 years ago
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