Perform the indicated operation and simplify.
+ 
A. 
B. 
C. 
D. 
Answer: B
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Answer the question.How would you find the empirical probability of getting a red card, if you are choosing a card from an ordinary deck of 52 cards?
A. Choose a card from a deck of 52 cards 52 times and then find the relative frequency of red cards. This would be done by dividing the number of times a red card has occurred by 52. B. Choose a card from a deck of 52 cards 2 times and then find the relative frequency of red cards. This would be done by dividing the number of times a red card has occurred by 2. C. Choose a card from a deck of 52 cards many times and then find the relative frequency of red cards. This would be done by dividing the number of times a red card has occurred by the total number of times a card was chosen. D. The empirical probability cannot be determined.
Solve the system of equations using matrices. Use Gauss-Jordan elimination. x + y - z + w = -5 3x - y + 3z - 2w = 7-2x + 2y + z - w =16 -x - 2y - 3z + 3w = -22
A. {(-2, -3, 5, 
)}
B. {(-2, 3, 4, -2)}
C. {(2, -3, -4, -2)}
D. {(
, - 
, - 
, - 
)}
Find the sign of the six trigonometric function values for the given angle.497°
A. Positive: tangent and cotangent; negative: sine, cosine, secant, cosecant B. Negative: all C. Positive: cosine and secant; negative: sine, tangent, cotangent, cosecant D. Positive: sine and cosecant; negative: cosine, tangent, cotangent, secant
Determine whether the pair of fractions is equivalent.
and 
A. equivalent B. not equivalent