Simplify. Write the answer using only positive exponents. Leave the answer in exponential notation.(3xy)2
A. 3xy2
B. 3x2y2
C. 9x2y2
D. 6 ? 2x ? 2y
Answer: C
Mathematics
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Find the expected value.Four cards are numbered 1 through 4. Two of these cards are chosen at random without replacement and the numbers on them are multiplied. Find the expected value of this product.
A. 
B. 4
C. 6
D. 
Mathematics
Use l'Hopital's Rule to evaluate the limit.
A. 1
B. 8
C. 
D. ?
Mathematics
Provide an appropriate response.True or false? The x-intercepts of the hyperbola with equation
are 
and (-8, 0).
A. True B. False
Mathematics
Solve.A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 10 ft and the vertical clearance must be 5 ft at a point 24 ft from the center. Find an equation for the ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics