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ICE Princess25 [194]
2 years ago
13

If it took 8 people 10 hours to build a barn, how long would it take 14 people to build the same barn?

Mathematics
1 answer:
Basile [38]2 years ago
8 0

Answer:

if 8 people take 10 hours then

1 people 10 / 8 = 1.25 hours

then 14 people =

14 * 1.25 = 17.5 hours

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Answer:

Step-by-step explanation:

#2 the answer is B, -16/9

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to do this, find the least common denominator. it's 4

1/4-10/4=-9/4

then divide 4 by -9/4. This is the same as 4*-4/9. That is -16/9

#3 the answer is A 9x/x-8

first factor the denominator of the first fraction using special products

x^2-6x-16=(x-8)(x+2)

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#5 the answer is C (x-8)/(x+3)

using special products you can factor the numerator

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then, using special products you can also factor the denominator

x^2+7x+12 is the same as (x+4)(x+3)

you can see that both the numerator and the denominator is multiplied by (x+4) you can simplify that. That leaves you with (x-8)/(x+3)

#7 the answer is D 3m

in the numerator in the second fraction, you can factor out 5m^2

leaving you with 5m^2(m-6)/5m^2. simplify the 5m^2 and the m-6

after you simplify both of those, you will get 3m

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x = 7 ± \sqrt{15}

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That would be 4 * 5 = 20 ways  answer.

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Answer:

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