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MatroZZZ [7]
3 years ago
15

Hank is currently reading a book that is 250 pages long. If he can read 10 pages every 15 minutes, how many hours will it take h

im to read the book?
A. 6.25 hours

B. 2.78 hours
Mathematics
2 answers:
lara31 [8.8K]3 years ago
8 0
The answer is B 2.78 hours
Evgesh-ka [11]3 years ago
7 0

\text{We need to find how long it takes for him to read 250 pages}\\\\\text{We know that he can read 10 pages in 15 minutes}\\\\\text{With this knowledge, lets find our answer}\\\\\text{We can divide 250 by 10 to find how many sections of pages he needs to}\\\text{read}\\\\250\div10=25\\\\\text{Now, since we know this, we can multiply 25 by 15 to find the total time to}\\\text{read}\\\\25\cdot15=375\,\text{minutes}\\\\\text{This translates to 6.25 hours, therefore making A your answer}\\

\boxed{\text{A).\,\, 6.25 hours}}

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3 years ago
The least common multiple of two numbers is 84, and one of the numbers is 5 less than the other number. What are the numbers? Co
Sergio039 [100]

Answer:

factor 1 = x

factor 2 = x - 5

(factor 1)  *  (factor 2)  = 84

    (x)      *      (x - 5)     = 84

          x² - 5x              = 84

              x² - 5x - 84   = 0

             (x - 12) (x + 7)  = 0

x - 12 = 0    or     x + 7 = 0

 x = 12       or      x = -7

factor 2 = x - 5   = (12) - 5  = 7    or    (-7) - 5  =  -12

Answer: 12, 7     or    -7, -12

5 0
3 years ago
Read 2 more answers
Linear Inequalities - Applications
ANEK [815]
Nine ft and 8 ft with can of the same because
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An ethanol railroad tariff is a fee charged for shipments of ethanol on public railroads. An agricultural association publishes
KIM [24]

Answer:

The probability that the mean is less than 110

P(x⁻<110) =0.5

Step-by-step explanation:

<u>Explanation</u>:-

Given the standard deviation of the Population' σ' = 1250

Given sample size 'n' = 350

The standard error of the mean determined by

                                                                             S.E = \frac{S.D}{\sqrt{n} }

                                             Standard error = \frac{1250}{\sqrt{350} } = 66.8153

  by using normal distribution    z = \frac{x -mean}{S.E}

                                         z = \frac{x^{-}  -110}{66.8}

                                   cross multiplication  66.8z = x⁻-110

                                                                         x⁻  =  66.81Z+110

P(x⁻<110)=P(66.81Z+110<110)

             = P(66.81Z < 110-110)

            = P(66.81Z<0)

           = P(Z<0)

           = 0.5- A(z₁)

          = 0.5 - A(0)  (here z₁=0)

         = 0.5 -0.00

        =0.5

                                     

<u>Conclusion:- </u>                            

The probability that the mean is less than 110

P(x⁻<110) =0.5

4 0
3 years ago
Solve.
andreyandreev [35.5K]
The answer is to 50years
7 0
3 years ago
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