Find the absolute value.
A. ±2.2
B. -2.2
C. 0
D. 2.2
Answer: D
Mathematics
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Find the polar coordinates, 
and 
, of the point given in Cartesian coordinates.
A. 
B. 
C. 
D. 
Mathematics
Express the relationship between a small change in x and the corresponding change in y in the form 
.y = 4 cot 
A. dy = -4x2 csc 
dx
B. dy = 4x2 csc2 
dx
C. dy = -4x2 csc2 
dx
D. dy = -4x3 csc2 
dx
Mathematics
Find the standard deviation for the given data. Round your final answer to one more decimal place than that used for the observations.The amount of sun-induced expansion (in mm) of a steel I-beam 10 m long before expansion: 
A. 0.001 mm B. 0.032 mm C. 0.065 mm D. 0.072 mm
Mathematics
Provide an appropriate response.Perform the division and express in scientific notation:
A. -4.81 × 107 B. 5 × 106 C. 5 × 107 D. .05
Mathematics