Find the area of the triangle. If necessary, round the answer to two decimal places.a = 4, b = 5, c = 7
A. 9.80
B. 10.01
C. 16.01
D. 3.46
Answer: A
Mathematics
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Change the given polar coordinates (r, ?) to rectangular coordinates (x, y).
A. (-6
, -6
)
B. (3
, -3
)
C. (-3
, -3
)
D. (3
, -3)
Mathematics
Find the equation of the line passing through the indicated two points. Write the equation in point-slope form.(-4, -8) and (2, 16)
A. y + 8 = 4(x + 4) or y - 16 = 4(x - 2) B. y + 8 = 4(x - 4) or y - 16 = 4(x + 2) C. y - 8 = 4(x - 4) or y + 16 = 4(x + 2) D. y - 8 = 4(x - 4) or y - 16 = 4(x - 2)
Mathematics
Find the distance between P and Q and the coordinates of the midpoint of the segment joining P and Q.
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Mathematics
Verify the identity.(tan ? + 1)2 + (tan ? - 1)2 = 2 sec2 ?
What will be an ideal response?
Mathematics