Use the properties of determinants to find the value of the second determinant, given the value of the first.
= 48
= ?
A. -48
B. 48
C. 144
D. -144
Answer: C
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Solve the problem.Two angles are complementary if their sum is 90°. If the measure of the first angle is x°, and the measure of the second angle is (3x - 2)°, find the measure of each angle.
A. 1st angle = 31°; 2nd angle = 59° B. 1st angle = 22°; 2nd angle = 68° C. 1st angle = 22°; 2nd angle = 64° D. 1st angle = 23°; 2nd angle = 67°
Solve using elimination.
A. x = 
, y = 
; x = 
, y = - 
or 
, 
B. x = 
, y = 
; x = - 
, y = - 
or 
, 
C. x = 
, y = - 
; x = - 
, y = 
or 
, 
D. x = 
, y= - 
; x = 
, y = 
or 
, 
Solve the exponential equation. Express the solution set in terms of natural logarithms.2 x + 7 = 6
A. 
B. {ln 6 - ln 2 - ln 7}
C. 
D. 
Use the distributive law to multiply.6(4x + 7y + 6)
A. 24x + 7y + 36 B. 24x + 7y + 6 C. 24x + 42y + 6 D. 24x + 42y + 36