Use the formulas below to answer the question. Round your answer to the nearest tenth if necessary.C = 
(F - 32) or C = 
F = 
C + 32 or F = 1.8C + 32.When the temperature is 20°C, what is the temperature in degrees Fahrenheit?
A. 43.0°F
B. 42.4°F
C. 68°F
D. 93.6°F
Answer: C
Mathematics
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Find the requested sum of the arithmetic sequence.an = -3n - 5Find S4.
A. -17 B. -32 C. -50 D. -8
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Solve the equation using the zero product property.-9(x - 9)(x + 5) = 0
A. {-9, 5} B. {-9, 9, -5} C. {9, 5} D. {9, -5}
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Find the slope and y-intercept of the line.13x + 5y = 3
A. slope = 
; y-intercept = - 
B. slope = 
; y-intercept = 
C. slope = 13; y-intercept = 3
D. slope = - 
; y-intercept = 
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Solve the quadratic equation using the quadratic formula.2x2 + 20x + 82 = 0
A. {-5 ± 4i} B. {-9, -1} C. {-5 + 4i} D. {-5 ± 16i}
Mathematics