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Fynjy0 [20]
3 years ago
6

It takes Darnell twice as long as Julius to complete the same job. When the men work together, they can complete the job in 4 ho

urs.
How many hours are required for Darnell to do the job alone?



Enter your answer in the box.
Mathematics
2 answers:
Verizon [17]3 years ago
3 0

1 = 4/r + 4/2r

multiply each side by 2r

2r = 8 +4

2r = 12

r = 6

It takes Julius 6 hours to do the job

It takes Darnell 12 hours to do the job

masha68 [24]3 years ago
3 0

It takes Darnell 12 hours to do the job, just took the test

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How long will it take for an airplane that averages 95 miles an hour to fly 1,710 miles?
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A city's population is 12,000 and grows at 2.6% rate. What will the population be after 25 years? A city's population is 230,000
Levart [38]

Answer:

The 12000 City would become 22,986 people, while the 230,000 city would become a population of 124,223.

Step-by-step explanation:

1st Part:

=12000⋅(0.026000000000000002⋅25)

=12000(2.718281828459045)(0.65)

=22986

2nd Part:

=230000⋅(−0.044000000000000004⋅14)

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3 0
3 years ago
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What is the sum of 5x^2y and (2xy^2 + x^2y)
eimsori [14]
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Adding them together, you get 6x^2y.  

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8 0
3 years ago
How many different twotwo​-letter passwords can be formed from the letters
Anna [14]

Answer:

70

Step-by-step explanation:

GIVEN: two two​-letter passwords can be formed from the letters  A, B, C, D, E, F, G and H.

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SOLUTION:

Total number of different letters =8

for two two​-letter passwords 4 different are required.

Number of ways of selecting 4 different letters from 8 letters=^8C_4

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Hence there are 70 different two-letter passwords can be formed using 8 letters.

5 0
3 years ago
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