Solve the equations.x2 - 81 = 0
A. 43
B. ±9
C. ±8
D. 9
Answer: B
Mathematics
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Find the equation for the plane tangent to the parametrized surface S at the point P.S is the cylinder r(?, z) = 4 cos ?i + 4 sin ?j + zk ; P is the point corresponding to 
.
Fill in the blank(s) with the appropriate word(s).
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Solve the problem.Let f(x) compute the time in hours to travel x miles at 36 miles per hour. What is the interpretation of 
A. The hours taken to travel 36 miles B. The miles traveled in 3 hours C. The hours taken to travel 3 miles D. The miles traveled in 36 hours
Mathematics
Solve the problem.Determine the length of a pendulum that has a period of 3 seconds.
A. 
ft
B. 
ft
C. 
ft
D. 
ft
Mathematics
What percent of the circle is shaded? The circle is broken into 8 equal-sized sectors.
A. 5% B. 62.5% C. 50% D. 3% E. 25%
Mathematics