Solve the system.3x2 - 4y2 = -244x2 + 3y2 = 43
A. {(2, 3), (-2, 3), (2, -3), (-2, -3)}
B. {(2, -3), (2, 3)}
C. {(2, 3), (3, 2), (-2, -3), (-3, -2)}
D. {(-2, -3), (-3, -2)}
Answer: A
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XC = 72.7 ê IC = 28.2 mA IR = 38.8 mA
Solve the problem.A woman decides to organize her classic book collection by year of publication. Make a relative frequency distribution of the years using the intervals 1750-1799, 1800-1849, 1850-1899, and 1900-1949.
A. 
B. 
C. 
D. 
Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.f(x) = x2 + 2 from x = 1 to x = 4; n = 6
A. 26.875 B. 28.875 C. 30.875 D. 24.875
Use a graphing utility to find the sum of the geometric sequence. Round answer to two decimal places, if necessary.
+ 
+ 
+ 
+ ... + 
A. 3276.6 B. 6553.4 C. 3276.4 D. 6553.2