Solve.
+ 
= - 
A. 15
B. -16
C. -15
D. No solution
Answer: C
Mathematics
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Simplify.81 ÷ 3 + {6 ? [18 - (2 ? 2)]}
A. 101 B. 114 C. 106 D. 111
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Solve the problem.Given that the polar equation r = 
models the orbits of the planets about the sun, estimate the closest approach of a planet for which 
and 
to the sun.
A. 8 astronomical units B. 4 astronomical units C. 14 astronomical units D. 68 astronomical units
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Verify that each equation is an identity.sec(2?)= 
What will be an ideal response?
Mathematics
Convert to decimal degree notation. Round to two decimal places.49°51'
A. 49.81° B. 49.86° C. 49.85° D. 49.91°
Mathematics