Solve the problem.If 3 times a number is added to -7, the result is 10 times the number. Find the number.
A. 1
B. 6
C. -6
D. -1
Answer: D
Mathematics
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Find the center of mass of a thin plate covering the given region with the given density function.The region bounded by the parabola y = 64 - x2 and the x-axis, with density ?(x) = 8x2
A. 
= 0, 
= 
B. 
= 0, 
= 
C. 
= 0, 
= 
D. 
= 
, 
= 0
Mathematics
Provide an appropriate response.Round 587,459 to the nearest thousand.
A. 588,000 B. 587,000 C. 587,500 D. 600,000
Mathematics
Graph the function.y = - 
cos 
A. 
B. 
C. 
D. 
Mathematics
Find an equation of the least-squares line for the data. Please round the coefficients to the nearest hundredth. x1123445y235666.58.5?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics