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Lina20 [59]
3 years ago
8

Quick need answer!!!!!!

Mathematics
2 answers:
xxTIMURxx [149]3 years ago
8 0

Answer:

75.5°

Step-by-step explanation:

Cos(A) = 2/8 = 0.25

A = 75.52248781

hammer [34]3 years ago
3 0

Answer:

A = 75.5

Step-by-step explanation:

\cos(a)  =  \frac{2}{8}  \\  \cos(a)  =  \frac{1}{4}   \\ a = 75.5

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Step-by-step explanation:

im not sure if it is right,but here is my thought since its gonna be half first you do the 4x2x2=16 divide 16 by 2 witch will give you have of 16 witch will also give you 8

4 0
3 years ago
Use the given values of n and p to find the minimum usual value μ - 2σ and the maximum usual value μ + 2σ.
mart [117]

Answer:

\mu -2\sigma = 915.428 - 2* 22.87=869.69

\mu +2\sigma = 915.428 + 2* 22.87=961.17

And the best option would be:

4. Minimum: 869.69; maximum: 961.17

Step-by-step explanation:

We can assume that the variable of interst X is distributed with a binomial distribution and we can use the normal approximation.

For this case the mean would be given by:

E(X) = np = 2136 *(\frac{3}{7})= 915.428

And the standard deviation would be:

\sigma = \sqrt{2136*(\frac{3}{7}) (1-\frac{3}{7})} =22.87

And if we find the limits we got:

\mu -2\sigma = 915.428 - 2* 22.87=869.69

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And the best option would be:

4. Minimum: 869.69; maximum: 961.17

5 0
3 years ago
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