Multiply.(9x + 4y)2
A. 9x2 + 72xy + 16y2
B. 81x2 + 72xy + 16y2
C. 81x2 + 16y2
D. 9x2 + 16y2
Answer: B
Mathematics
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Use a calculator to find the function value. Give your answer rounded to seven decimal places, if necessary.
A. 1.2589754 B. 0.8030632 C. 0.7942967 D. 1.245232
Mathematics
Find the product.(9a3 + 7c)(9a3 - 7c)
A. 9a6 - 7c2 B. 81a6 + 126a3c - 49c2 C. 81a6 - 126a3c - 49c2 D. 81a6 - 49c2
Mathematics
Graph the given line.y = 6
A. 
B. 
C. 
D. 
Mathematics
The velocity v of blood that flows in a blood vessel with radius B and length l at a distance b from the central axis is 
where P is the pressure difference between the ends of the vessel and q is the viscosity of the blood. Find the average velocity (with respect to r) over the interval 0 ? b ? B.
What will be an ideal response?
Mathematics