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Anna007 [38]
3 years ago
11

X to the second power equals 14

Mathematics
1 answer:
yaroslaw [1]3 years ago
5 0
X to the second power equals 14 is the same as:
x^{2}=14
we can take the square root of both sides to get:
x= \sqrt{14}
because we cannot simplify the 14 inside the square root symbol, our final answer is
x= \sqrt{14}
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Answer:

(-26, 32)

Step-by-step explanation:

6 0
3 years ago
The scores on a math test are normally distributed with a mean of 74 and a standard deviation of 8. The test scores range from 0
hram777 [196]

Answer:

The Estimate the number of students who took the scores between  82 and 98 = 16

Step-by-step explanation:

<u><em>Explanation</em></u>:-

Given data The scores on a math test are normally distributed with a mean μ = 74  

standard deviation of Population

                                               S.D (σ) = 8

Let 'x' be the random variable of Normal distribution

<u><em>case(i)</em></u>:-  when  x = 82

            Z = \frac{x-mean}{S.D}

           Z = \frac{82-74}{8} = 1

     

<u><em>case(ii)</em></u>:-  when  x = 98

            Z = \frac{x-mean}{S.D}

           Z = \frac{98-74}{8} = 3

The probability that test scores between 82 and 98.

P(82≤x≤98) = P(1≤z≤3)

                 = P(z≤3) - P(z≤1)

                 = 0.5+A(3)-(0.5+A(1))

                =  A(3) -A(1)

               = 0.4986 - 0.3413

               = 0.1573

<u><em>Final answer</em></u>:-

The Estimate the number of students who took the scores between  82 and 98

             = 100 X 0.1573 = 15.73 ≅16

           

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Step-by-step explanation:

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9514 1404 393

Answer:

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Step-by-step explanation:

The simple interest formula is ...

  I = Prt

where I is the interest earned on principal P invested at annual rate r for t years. Solving for t, we have ...

  t = I/(Pr) = 1125/(2500×.05) = 1125/125

  t = 9 . . . . years

It will take 9 years for Anna to earn 1125 in interest.

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What angle is this? obtuse,acute or right I have know idea? ​
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Step-by-step explanation:

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