exam Maths Puzzle Numerical Ability

Use Cramer's rule to find the solution set for the system.

5x-7y+z=-51
-7x+y-z=-5
x-5y-2z=-58

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exam Other Question

a die is rolled. the sample space of equally likely outcomes is {1,2,3,4,5,6} find the probability of getting a 6. Thanks =) You are dealt two cards successively without replacement from a standard deck of 52 playing cards. Find the probability that the first card is a two and the second card is a ten. Round your answer to three decimal places.