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2 years ago

(2.9x10^8)divided by(9.2x10^6)

Mathematics

1 answer:

dangina [55]2 years ago

7 0

Answer:

(2.9x10^8) divided by (9.2x10^6) will be equal to 31.52

Step-by-step explanation:

Given that:

(2.9x10^8) divided by (9.2x10^6)

we can write it as:

=2.9/9.2 * (10^8-6) (subtracting exponents of same bases in division)

=0.3152 * 10^2 (As 10^2 equals 100)

=31.52 (Answer)

I hope it will help you!

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2 years ago

A study was conducted to determine whether magnets were effective in treating pain. The values represent measurements of pain us

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Answer:

Given:

Sham: n= 20, x=0.44, s=1.24,

Magnet:n= 20, x =0.49, s= 0.95

For Sham:

Sample size, n = 20

Sample mean = 0.44

Standard deviation = 1.24

For Magnet:

Sample size = 20

Sample mean = 0.49

Standard deviation = 0.95

The null and alternative hypotheses:

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Test statistics = 1.7037

b) P-value:

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Magnet: degrees of freedom $= n - 1 = 20 - 1 = 19$

The critical values:

[Za/2, df1, df2)], [(1 - Za/2), df1, df2]

$f[0.05/2, 19, 19], f[(1 - 0.05/2), 19, 19]$

$f[0.025, 19, 19], f[0.975, 19, 19]$

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c) Conclusion:

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2 years ago

How can these models be used to find the sum 1.8 + 1.56?

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Answer:

The sum of 1.8 and 1.56 is 3.36 according to the model

Sum of decimals

Given the expression 1.8 + 1.56

Using the partial sum method

1.8 + 1.56 = (1.0 + 0.8) + (1.0+0.56)

Regroup as whole and decimal number

1.8 + 1.56 = (1.0 + 1.0) + (0.8 +0.56)

1.8 + 1.56 = 2.0 + 1.36

1.8 + 1.56 = 3.36

Hence the sum of 1.8 and 1.56 is 3.36 according to the model

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