Select the more reasonable temperature for the item.A cold winter day in Montreal, Canada 20°C 20°F
A. 20°F
B. 20°C
Answer: A
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Find the equation of the circle that satisfies the following conditions. Express the final equation in the form x2 + y2 + Dx + Ey + F = 0.Tangent to the x axis, a radius of length 7, and abscissa of center is –8
A. x2 + y2 - 16x - 14y + 64 = 0 and x2 + y2 - 16x + 14y + 64 = 0 B. x2 + y2 + 16x - 14y + 64 = 0 C. x2 + y2 + 16x - 14y + 64 = 0 and x2 + y2 + 16x + 14y + 64 = 0 D. x2 + y2 + 16x + 14y + 64 = 0 E. x2 + y2 - 16x + 14y + 64 = 0
Solve the proportion.
= 
A. 20
B. 
C. 
D. 
Find the area of the specified region.Inside the six-leaved rose r2 = 8 cos 3?
A. 4
B. 8
C. 16
D. 
Find the area of the triangle using Heron's formula. Round your answer to two decimal places as needed.
A. 16.43 mm2 B. 5.81 mm2 C. 8.22 mm2 D. 11.62 mm2