Solve the problem.Use determinants to find the area of the triangle with vertices (-5, -4), (5, 1), and (1, 5).
A. 31.5
B. 29.75
C. 30.0
D. 31.25
Answer: C
Mathematics
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Find the requested value.Find tan ? if sin ? = - 
and cos ? = - 
.
A. - 
B. 
C. - 
D. 
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Determine which fractions are proper.
, 
, 
, 
, 
A. 
, 
, 
B. 
, 
, 
, 
C. 
, 
, 
, 
, 
D. 
, 
Mathematics
Write the number in scientific notation.The population of a city is 270,000.
A. 2.7 × 104 B. 2.7 × 105 C. 2.7 × 10-4 D. 2.7 × 10-5
Mathematics
Find the vertex, focus, and directrix of the parabola with the given equation.y2 - 14y - 4x + 61 = 0
A. vertex: (3, 7) focus: (2, 7) directrix: x = 4 B. vertex: (7, 3) focus: (7, 4) directrix: y = 2 C. vertex: (7, 3) focus: (7, 2) directrix: y = 4 D. vertex: (3, 7) focus: (4, 7) directrix: x = 2
Mathematics