Let x be a number. Translate the English phrase or sentence into a mathematical expression. Four less than a number
A. 4 - x
B. 4x
C. x ÷ 4
D. x - 4
Answer: D
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Use multiplication to check the answer. If an answer is incorrect, find the correct answer.
A. Incorrect; should be 5440 R1 B. Incorrect; should be 5440 R2 C. Correct D. Incorrect; should be 5439
Simplify the expression.(4-2)-1
A. 
B. 
C. 16
D. 4
Find the equation for the hyperbola described.Center at (0, 0); focus at (9, 0); vertex at (2, 0)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Find the mean, median, mode, and midrange for the given data. Round to the nearest tenth if necessary.89, 86, 75, 72, 93, 89, 89, 86, 72, 93, 89, 75, 94, 72, 89, 89, 75, 86, 72, 89
A. mean = 83.7, median = 86, mode = 89, midrange = 83 B. mean = 83.7, median = 87.5, mode = 89, midrange = 83 C. mean = 83.7, median = 87.5, mode = 89, midrange = 22 D. mean = 84.2, median = 86, mode = 94, midrange = 22