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3 years ago

9

If one card is randomly chosen from a standard deck, what is the probability that a black 7 is chosen? A. 2/52 B. 4/52 C. 7/52 D

. 26/52

2 answers:

aksik [14]3 years ago

7 0

The answer to your question is A

netineya [11]3 years ago

5 0

$|\Omega|=52\\ |A|=2\\\\ P(A)=\dfrac{2}{52}\Rightarrow \text{A}$

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2 years ago

11) Determine if the following numbers are<br> prime, composite or neither.<br> 13

harina [27]

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Step-by-step explanation:

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3 years ago

Read 2 more answers

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irina1246 [14]

Operations that can be applied to a matrix in the process of Gauss Jordan elimination are :

replacing the row with twice that row

replacing a row with the sum of that row and another row

swapping rows

Step-by-step explanation:

Gauss-Jordan Elimination is a matrix based way used to solve linear equations or to find inverse of a matrix.

The elimentary row(or column) operations that can be used are:

1. Swap any two rows(or colums)

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as is done in replacing a row with sum of that row and another row.

3. Multiply any row (or column) entirely by a non zero scalar as is done in replacing the row with twice the row, here scalar used = 2

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3 years ago