Solve the problem.Convert 18°F to Celsius. Use the formula C = 
(F - 32). Round to the nearest tenth if necessary.
A. 64.4°C
B. 22.0°C
C. 0.4°C
D. -7.8°C
Answer: D
Mathematics
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Give the specific equation relating the variables after evaluating the constant of proportionality for the given set of values.p is proportional to q and the square root of r, and p = 30 when q = 2 and r = 9.
A. p = 
q
B. p = q
C. v = 
D. p = 5q
Mathematics
Solve the problem.Which of the lines in the picture are lines of symmetry of the given figure?
A. m B. l C. l, m, and n D. l and m
Mathematics
Solve the quadratic equation by completing the square.x2 + 12x + 40 = 0
A. {-6 + 2i} B. {-6 - 4i, -6 + 4i} C. {-6 - 2i, -6 + 2i} D. {-8, -4}
Mathematics
Combine terms.-2y4 - 2y4
A. 4y8 B. 4y4 C. -4y4 D. -4y8
Mathematics