Find the center and radius of the sphere whose equation is 
. Round your answer to two decimal places, where applicable.
?
A. center: 
; radius: 2.00
B. center: 
; radius: 2.00
C. center: 
; radius: 8.00
D. center: 
; radius: 4.00
E. center: 
; radius: 8.00
Answer: B
Mathematics
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Solve the problem.Find the centroid of the region cut from the first quadrant by the line 
.
A. 
= 
, 
= 
B. 
= 
, 
= 1
C. 
= 1, 
= 
D. 
= 
, 
= 
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Give the genus of the object.The number 5
A. Genus 0 B. Genus 3 or more C. Genus 1 D. Genus 2
Mathematics
Provide an appropriate response.Simplify by combining like terms: 5x + 2y - 8y + x
A. 7x - 7y B. 6x - 6y C. 5x - 6y D. 6x + 6y
Mathematics
Solve the problem.The table shows the number of car accidents last year in each of six different towns. Find the median number of accidents. 
A. 219.5 B. 274 C. 267.5 D. 261
Mathematics