Solve the system of linear equations and check any solution algebraically.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: E
Mathematics
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Find the volume of the described solid.The base of a solid is the region between the curve y = 6cos x and the x-axis from x = 0 to x = ?/2. The cross sections perpendicular to the x-axis are isosceles right triangles with one leg on the base of the solid.
A. 
?
B. 3?
C. 
?
D. 9?
Mathematics
Simplify.
? 
A. 
B. 
C. 
D. 
Mathematics
Write the equation of the ellipse with center at 
, 
, 
style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_9261ecd0398f4d8f8c70bb2e0" /> and major axis parallel to the y-axis.
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve the problem.The profits (in millions) for a company for 8 years was as follows: 
Find the cubic function of best fit to the data.
What will be an ideal response?
Mathematics