Find all real solutions to the system of equations using the substitution method.xy - x2 = -20x - 2y = 3
A. (-5, -1), (8, 
)
B. (-5, -1), (
, 8)
C. (5, 1), (- 
, -8)
D. (5, 1), (-8, - 
)
Answer: D
Mathematics
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Solve the formula for the specified variable.I = 
for n
A. n = IR(Ir - E)
B. n = 
C. n = 
D. n = 
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Find the area of the triangle.The base is 12.6 cm and the height is 14.3 cm.
A. 90.09 cm2 B. 360.36 cm2 C. 13.45 cm2 D. 180.18 cm2
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Simplify.
3
A. 
B. 
C. 
D. 
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