1. A person owns a collection of 30 CDs, of which 5 are country music. If 2 CDs are selected at

Mathematics

2 answers:

OverLord2011 [107]2 years ago

5 0

Answer:

Step-by-step explanation:

Sunflower can u please come answer my question next it says

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kozerog [31]2 years ago

3 0

First you have 30 cds and 5 if them are country.

You have 5/30 chance to take one country = 0.1666...= 16,6%

Next time you gonna pick up one you have 29 cds and 4 country

4/29= 0,1379=13,8%

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<h2>Answer:</h2>

D. Distance formula

<h2>Step-by-step explanation:</h2>

$The \ \mathbf{distance} \ d \ between \ the \ \mathbf{points} \ (x_{1},y_{1}) \ and \ (x_{2},y_{2}) \ in \ the \ plane \ is:\\ \\ d=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

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<em>The distance form</em> $(0,0)$ to $(0,2)$ is $\sqrt{(0-0)^2+(2-0)^2}=\sqrt{2^2}=2$ <em>whose justification is the </em><em>Distance Formula. </em>

<em />

Here in this statement the justification is also the Distance Fromula, so we take the distance from $(0,0) \ to \ (1,\sqrt{2})$ whose result is also 2 and is the radius of the circle.