Write the phrase as a variable expression. Use x for the unknown number.The difference of -5 and twice a number
A. -5 + 2x
B. -5 - 2x
C. 2(-5 - x)
D. 2x + 5
Answer: B
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For an election with 6 candidates (A, B, C, D, E, and F), we have the following preference schedule:
Using the method of pairwise comparisons, the winner of the election is
A. A. B. B. C. C. D. E. E. none of these
Write the number in fixed-point notation. Round your answer to 10 decimal places.
?
?
A. 0.0771604938 B. 0.0000007716 C. 0.0077160494 D. 0.6666666667 E. 0.0007716049
Evaluate the expression for the given replacement values.2x + y
for x = 5 and y = -6
A. 16 B. -1 C. 11 D. 4
Solve using a system of linear equations in three variables.A ceramics workshop makes wreaths, trees, and sleighs for sale at Christmas. A wreath takes 3 hours to prepare, 2 hours to paint, and 10 hours to fire. A tree takes 15 hours to prepare, 3 hours to paint, and 4 hours to fire. A sleigh takes 4 hours to prepare, 14 hours to paint, and 7 hours to fire. If the workshop has 118 hours for preparation time, 89 hours for painting, and 138 hours for firing, how many of each can be made?
A. 9 wreaths, 5 trees, 4 sleighs B. 4 wreaths, 9 trees, 5 sleighs C. 5 wreaths, 4 trees, 9 sleighs D. 10 wreaths, 6 trees, 5 sleighs