Find the equation of the circle. Express the equation in standard form
A. (x + 3)2 + (y + 4)2 = 42
B. (x - 3)2 + (y + 4)2 = 42
C. (x + 3)2 + (y - 4)2 = 42
D. (x - 3)2 + (y - 4)2 = 42
Answer: A
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Find the common difference d and the nth term an of the arithmetic sequence with the specified terms. 10th term is 25; 16th term is 27
A. d = 
; an = 
n + 
B. d = 
; an = 
n + 
C. d = 
; an = 
n + 
D. d = 
; an = 
n + 
Find the measure of one interior angle of the polygon.Icosagon
A. 162° B. 18° C. 144° D. 36°
Solve.A certain radioactive isotope has a half-life of approximately 1450 years. How many years to the nearest year would be required for a given amount of this isotope to decay to 40% of that amount?
A. 1877 years B. 1069 years C. 870 years D. 1917 years
Solve.A tool and die company machines a part that is supposed to measure 8.75 mm in diameter. For quality control purposes, ten parts are selected at random and measured to determine how closely they match the specified diameter. The results are as follows:8.758.738.748.758.758.768.738.758.748.76(a) Find the range of the measurements.(b) Find the standard deviation of measurements.
A. (a) 0.04 mm, (b) 0.01 mm B. (a) 0.03 mm, (b) 0.01 mm C. (a) 0.03 mm, (b) 0.02 mm D. (a) 0.04 mm, (b) 0.02 mm