Subtract.(r3 - 7rs + 5s2) - (9r3 + rs - 2s2)
A. -8r3 - 6rs + 7s2
B. -8r3 - 8rs + 7s2
C. -8r3 - 8rs + 3s2
D. -9r3 - 7rs + 3s2
Answer: B
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250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 75 and standard deviation ? = 10.Peter's score on the exam places him in the 16th percentile of the class. Peter's score on the exam is approximately
A. 55. B. 45. C. 16. D. 65. E. none of these
Given y = f(u) and u = g(x), find dy/dx = f'(g(x))g'(x).y = sin u, u = 9x + 13
A. 9 cos (9x + 13) B. -9 cos (9x + 13) C. - cos (9x + 13) D. cos (9x + 13)
Solve using elimination.
A. x = 
, y = 
; x = - 
, y = 
; x = ,
, y = - 
; x = - 
, y = - 
or (
, 
), (- 
, 
), (
, - 
), (- 
, - 
)
B. x = 
, y = 
; x = ,
, y = - 
;
or (
, 
), (
, - 
)
C. x = 
, y = 
; x = - 
, y = 
; x = ,
, y = - 
; x = - 
, y = - 
or (
, 
), (- 
, 
), (
, - 
), (- 
, - 
)
D. x = - 
, y = 
; x = - 
, y = - 
or (- 
, 
), (- 
, - 
)
Provide an appropriate response.Which one of the following ratios is not the same as .75?(a) 3 to 4 (b) 8 to 6(c) .750 (d) 75 to 100
Fill in the blank(s) with the appropriate word(s).