Express the following number in scientific notation: 0.0317
a. 3.17 ð 10-2
b. 31.7 ð 10-3
c. 3.17 ð 10-2
c. 3.17 ð 10-2
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Solve the problem.The area of a circle with radius r is given by the function A(r) = ?r2. Find the area of the base of a circular storage tank if the radius is 5 feet long. Use ? ? 3.14.
A. 78.5 square feet B. 15.7 square feet C. 31.4 square feet D. 75 square feet
Find the flux of the curl of field F through the shell S.F = -2x2yi + 2xy2j + ln zk ; S: r(r, ?) = r cos ?i + r sin ?j + 4rk, 0 ? r ? 4 and 0 ? ? ? 2?
A. 
B. - 
C. 
?
D. - 256?
The graph of r = a? in polar coordinates is an example of the spiral of Archimedes. With your calculator set to radian mode, use the given value of a and interval of ? to graph the spiral in the window specified.a = 2, -3? ? ? ? 3?, [-20, 20] by [-20, 20]
A. 
B. 
C. 
D. 
Use the distributive property to rewrite the algebraic expression without parentheses. Then simplify the result, if possible.- 
(-9x - 6)
A. 12x + 8 B. 20x C. -12x - 8 D. 12x - 8