Use the determinant feature of a graphing calculator to solve the system by Cramer's rule . (Round to one decimal place.)1.5x + 3.1y - 2.3z + 0.6w = 2.76.1x - 0.5z - 3.4w = 0.811.5y - 2.2w = 04.0x + 3.0y - 2.1z = 9
A. {(4.3, 1.3, 4.9, 6.7)}
B. {(3.6, 1.1, 4.1, 5.6)}
C. {(3.2, 1.0, 3.7, 5.0)}
D. {(7.9, 2.4, 9.0, 12.3)}
Answer: B
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For the given arithmetic series, what is Sn?a1 = 9, d = 6, and n = 98
A. 29,400 B. 117,600 C. 29,409 D. 58,800
True or false?When using a truth table, the statement p ? q is equivalent to ~q ? ~p.
A. True B. False
Solve the problem.If the cost, C(x), for manufacturing x units of a certain product is given by 
, find the number of units manufactured at a cost of $14,600.
A. 70 units B. 100 units C. 90 units D. 80 units
Use the basic trigonometric identities and the given information to find the exact values of the remaining trigonometric functions.cos ? = 
and 270° < ? < 360°
A. sin ? = - 
cos ? = 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 
B. sin ? = 
cos ? = - 
tan ? = - 
csc ? = 
sec ? = - 
cot ? = - 
C. sin ? = - 
cos ? = 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 
D. sin ? = - 
cos ? = 
tan ? = - 
csc ? = - 
sec ? = 
cot ? = - 