Solve the system of equations by the elimination method.
x - 
y = -18
x + 
y = -9
A. (-12, 0)
B. (0, 12)
C. (0, -12)
D. (12, 0)
Answer: A
Mathematics
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Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.tan 2x - tan x = 0
A. 
, 
B. 0
C. 0, ?
D. 
, 
, 
, 
, 
, 
, 
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Provide the proper response.Write a ratio equal to the rate of 85%.
What will be an ideal response?
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Find the perimeter. Use 3.14 for ?.
A. 55.928 km B. 135.512 km C. 72.256 km D. 167.316 km
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Find the slope (if defined) of the line that passes through the given points.(0.8, 0.5) and (0.7, 0.3)
A. 2
B. - 2
C. 
D. 
Mathematics