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3 years ago

Please help meeee!!!

Mathematics

2 answers:

kap26 [50]3 years ago

7 0

Answer:

it is the third choice

Step-by-step explanation:

Alik [6]3 years ago

6 0

Answer: the last one........

Step-by-step explanation:

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4 years ago

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pashok25 [27]

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3 years ago

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3 years ago

Sammy can paint the house by himself in 15 hours. With Nolan's help, it only takes 9 hours.

saw5 [17]

<u>Given</u>:

Sammy can paint the house by himself in 15 hours. With Nolan's help, it only takes 9 hours.

We need to determine the time it would take for Nolan to paint the house by himself.

<u>Time taken by Nolan:</u>

Let the rate that Sammy can paint the house by himself is $\frac{1}{15}$

The rate that Sammy and Nolan together paint the house is $\frac{1}{9}$

To determine the rate that it takes for Nolan to paint the house by himself is to subtract the rates.

Thus, we have;

$Rate=\frac{1}{9}-\frac{1}{15}$

$Rate=\frac{5-3}{45}$

$Rate=\frac{2}{45}$

Thus, the rate that it would take Nolan to paint the house by himself is $\frac{2}{45}$

The time that it takes for Nolan to paint the house by himself can be determined using the formula,

$Total \ houses=Rate \times Time$

Substituting the values, we have;

$1=\frac{2}{45} \times t$

$\frac{45}{2}=t$

$22.5=t$

Thus, Nolan takes 22.5 hours to paint the house by himself.

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3 years ago

At a middle school, 95 students have freckles. There are 382 students in the school. To the nearest tenth of a percent, what per

Novay_Z [31]

Answer:

D. 24.9

Step-by-step explanation:

95/382 converted to a percentage is 24.9

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3 years ago