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Nookie1986 [14]
2 years ago
12

NEED HELP FAST!

Mathematics
1 answer:
saveliy_v [14]2 years ago
8 0
That is a 45 45 90 triangle.The hypotenuse of such a triangle equals one of the legs multiplied by the square root of 2.300 * sq root (2)=300 * <span> <span> <span> 1.4142135624 </span> </span> </span> Distance "D" = 300 * <span> <span> 1.4142135624 </span> </span>Distance "D" = <span> <span> <span> 424.3 meters
</span></span></span>(rounded to the nearest 10th of a meter.
<span> </span>
Source:http://www.1728.org/trig2.htm

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) An instructor gives his class a set of 18 problems with the information that the next quiz will consist of a random selection
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Answer:

The probability the he or she will answer correctly is 1.5%

Step-by-step explanation:

In all, there are 18 problems. In this question, the order of which the problems are sorted for the quiz makes no difference. For example, if the question A of the quiz is P1 and question B P2, and question A P2 and question B P1, it is the same thing.

There are 18 problems and 9 are going to be selected. So, there is going to be a combination of 9 elements from a set of 18 elements.

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In this question, m = 18, n = 9. So the total number of possibilities is:

T_{p} = C_{(18,9)} = \frac{18!}{9!(18-9)!} = 48620

Now we have to calculate the number of desired outcomes. This number is a combination of 9 elements from a set of 13 elements(13 is the number of problems that the student has figured out how to do).

Now, m = 13, n = 9. The number of desired possibilities is:

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The probability the he or she will answer correctly is 1.5%

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Find each measure cause i don't understand?
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Answer:

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Step-by-step explanation:

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