Let x be a number. Translate the English phrase or sentence into a mathematical expression. A number decreased by six
A. 6 - x
B. x - 6
C. 
D. x + 6
Answer: B
Mathematics
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Subtract.-140 - (-31)
A. 109 B. 171 C. -171 D. -109
Mathematics
Solve the equation.x - 7
+ 6 = 0
A. {1, 6} B. {1} C. {-1, -6} D. {1, 36}
Mathematics
Solve the problem.A hill on a hiking trail goes up 67 feet over a distance of 128 feet. Find the slope of the hill.
A. 
B. 
C. 67
D. 128
Mathematics
Use a graphing calculator to estimate f '(a) for the given value of a.f(x) = x2 e-x; a = 1.5
A. 0.6673 B. 0.1673 C. 0.5004 D. 23.5289
Mathematics