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12345 [234]
3 years ago
9

It would take john 6 hours to paint a room by himself. It would take Tom 18 hours to paint the same room by himself. Of john and

tom work together, each at his individual rate, how many hours will it take the to paint the room.
Mathematics
2 answers:
mario62 [17]3 years ago
6 0

Answer:

12 hrs

Step-by-step explanation:

6+18 =24

24/2 = 12

Daniel [21]3 years ago
3 0

Answer: 4h 30min

Step-by-step explanation: Theoretically, if X= Number of hours required to paint the room,

X(1/6+1/18)=1

X(3/18+1/18)=1

X(4/18)=1

X(2/9)=1

2/9X=1

X=9/2h, or 4 1/2 h

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The hypotenuse of a right triangle is 14 centimeters long. One of the legs of the triangle is 6 centimeters. What is the length
Fed [463]
Use Pythagorean theorem to solve.
a^2 + b^2 = c^2
6^2 + b ^2 = 14^2
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Subtract 36 from both sides.
b^2 = 196-36
b^2 = 160
Take the square root of both sides.
b = sqrt 160
As a decimal
b = 12.649
As a simplified radical
b = 4sqrt10
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