Solve the system by the elimination method.6x - 9y = 230x - 45y = 8
A. {(5, 4)}
B. ?
C. {(2, 8)}
D. 
Answer: B
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Solve the problem. Round to an appropriate number of significant digits.What is the minimum force required to prevent a ball weighing 26.7 lb from rolling down a ramp which is inclined 15.3° with the horizontal?
A. 25.8 lb B. 3.5 lb C. 12.9 lb D. 7 lb
Use the data set {-2, -3, 1, 8} to answer the following question(s).The mean of the data set is
A. 3.5. B. 0.25. C. 4. D. 1. E. none of these
Find the center, foci, and asymptotes of the hyperbola.
- 
= 1
A. C: (1, 1); F: (1, -4), (1, 6); A: y = 
x + 
, y = - 
x - 
B. C: (1, 1); F: (1, 6), (1, -4); A: y = 
x - 
, y = - 
x + 
C. C: (1, 1); F: (1, -2), (1, 4); A: y = 
x + 
, y = - 
x - 
D. C: (1, 1); F: (-2, 1), (4, 1); A: y = 
x - 
, y = - 
x - 
Let U = {all soda pops}; A = {all diet soda pops}; 
and 
Describe the given set in words.A' ? C
A. All diet soda pops and all soda pops in cans B. All non-diet soda pops and all soda pops in cans C. All diet soda pops in cans D. All non-diet soda pops in cans