Write the word phrase as an algebraic expression. Use x to represent the unknown number in the phrase.16 times the difference of 6 and a number
A. 16x - 6
B. 6 - 16x
C. 16(6 - x)
D. 6(16 - x)
Answer: C
Mathematics
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Find the indicated probability. Round your answer to 6 decimal places when necessary.You are dealt two cards successively (without replacement) from a shuffled deck of 52 playing cards. Find the probability that both cards are black.
A. 
B. 
C. 
D. 
Mathematics
Find the vertex of the parabola and determine if it is a maximum or minimum. f(x) = -2x2 - 8x - 7
A. (-2, 1); minimum B. (-2, -1); maximum C. (-2, 1); maximum D. (-2, -1); minimum
Mathematics
Find a unit normal vector to the surface 
at the point 
.
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Determine the equation of variation.
A. y = 60x
B. y = 
C. y = 
D. y = 72x
Mathematics