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nata0808 [166]
3 years ago
12

A set of four cards consists of two red cards and two black cards. The cards are shuffled thoroughly, and I am dealt two cards.

I found the number of red cards X in these two cards. The random variable X has which of the following probability distributions?
Mathematics
1 answer:
Delvig [45]3 years ago
4 0
25% because if you have 4 cards which would equal 100% and you are dealt 2 you have a 25% chance of getting any of the 4. (25x4=100)
But, if you are talking about probability of color it would be 50% because if you have 2 red cards and the total deck is 4 cards, then that is already half of the deck. And if you have 2 black cards then that makes up the other half. but if you are talking individually like Red 1 and Red 2 and Black 1 and Black 2 separating them would create a 25% probability. So, x= 25% (infivudually) or 50% (by color)
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Gwar [14]

Example:

y = 2x + 1 is a linear equation:

  • When x increases, y increases twice as fast, so we need 2x
  • When x is 0, y is already 1. So +1 is also needed
  • And so: y = 2x + 1

Here are some example values:

x y = 2x + 1

-1 y = 2 × (-1) + 1 = -1

0 y = 2 × 0 + 1 = 1

1 y = 2 × 1 + 1 = 3

2 y = 2 × 2 + 1 = 5

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Each solution is a pair of numbers (x,y) that make the equation true. Solving a linear equation usually means finding the value of y for a given value of x. If the equation is already in the form y = mx + b, with x and y variables and m and b rational numbers, then the equation can be solved in algebraic terms.

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3 years ago
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-2/3 qould be classifide as a whole,natural,rational, and irrational
erica [24]

-2/3 is not whole, not natural, and not irrational.

From that list, the only thing it is is rational.


3 0
3 years ago
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Question is in the picture. Please help
irakobra [83]

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BD = BD Reflexive property of a line (it is always equal to itself).

<ADB = <ADC = 90o

DB is perpendicular to AC Given.

<ADB + <ADC = 180o The two are supplementary.

Each angle = 90o Perpendicular means that one line meets another at 90o

2x = 180

x = 90o

Since each of the enclosed angles = 90, two have two triangles congruent by SAS <<<< Answer

4 0
3 years ago
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mylen [45]

Answer:

0.89736

Step-by-step explanation:

We solve this question using z score formula

Z score = x - μ/σ

x = raw score

μ = population mean

σ = population standard deviation

Hence,

x = 258, μ = 220, σ = 30

Z = 258 - 220/30

=1.26667

Probability value from Z-Table:

P(x<258) = 0.89736

Therefore, the probability that his weights is less than 258 kg is 0.89736

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3 years ago
How would you measure the volume of a cardboard shoebox
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-- Measure the length of the box.
-- Measure the width of the box.
-- Measure the height of the box.
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-- Multiply (length) x (width).

-- Take that answer and multiply it by (height).

-- You now have the volume of the box.

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