Subtract.(7b2 + 2b + 7) - (-9b2 - 2)
A. -2b2 + 4b + 7
B. 16b2 + 2b + 9
C. -2b2 + 2b + 5
D. 16b2 + 4b + 7
Answer: B
Mathematics
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Evaluate. The differential is exact.
A. 4 B. 1 C. 0 D. 2
Mathematics
Refer to a normal distribution described by the following figure. The mean is ? and the standard deviation is ?.
A data value of -70 corresponds to a standardized value of
A. -0.5. B. -2.22. C. -0.25. D. -1.5. E. none of these
Mathematics
Solve.
= 11
A. {121} B. {11} C. {-11} D. {11, -11}
Mathematics
Write an inequality that satisfies the description.Outside the ellipse with x-intercepts ±5 and y-intercepts ±1.
A. 
+ 
< 1
B. 
+ 
> 1
C. 
- 
< 1
D. 
+ 
> 1
Mathematics