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DochEvi [55]
3 years ago
8

Please help me stuck?????????????

Mathematics
1 answer:
professor190 [17]3 years ago
4 0

There are 5 points in the figure (<em>V</em>, <em>W</em>, <em>X</em>, <em>Y</em>, and <em>Z</em>)

<em>a</em> refers to the line through <em>V</em>, <em>W</em>, and <em>X</em>.

<em>b</em> refers to the line through points <em>Y</em>, <em>W</em>, and <em>Z</em>.

<em>D</em> refers to the plane that contains all 5 points as well as the 2 lines.

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What are the x-intercepts of x^2– 3x = 4?
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Answer:

x^2-3x=4

x^2-3x-4=0

x^2-4x+x-4=0

x(x-4)+1(x-4)=0

(x+1)(x-4)=0

x=-1,4

x- intercepts in the point (-1,0) and (4,0)

Step-by-step explanation:

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Which statement is true about the solution ?
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There are no real solutions to this equation

Step-by-step explanation:

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2.8<br> Whats the square root of 8?
Lera25 [3.4K]

Answer:

2.82842712475

Step-by-step explanation:

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Your neighbor has a bag with 5 oranges and 7 apples in it. You will be receiving two pieces of fruit from your neighbor. What is
Snezhnost [94]

Answer:

31.82% probability that you will receive 2 apples.

Step-by-step explanation:

The fruits are removed from the bag, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In this question:

5 + 7 = 12 total fruits, which means that N = 12

7 apples, which means that k = 7

You receive 2 fruits, which means that n = 2

What is the probability, in percent, that you will receive 2 apples, assuming she removes them from the bag in random order?

This is, as a proportion, P(X = 2). So

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}

P(X = 2) = h(2,12,2,7) = \frac{C_{7,2}*C_{5,0}}{C_{12,2}} = 0.3182

0.3182*100% = 31.82%

31.82% probability that you will receive 2 apples.

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Answer:

54.609 < 54.69

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