Ninety shares of Mattel stock have been purchased for $15 per share. How many shares of FedEx at $60 per share are needed to raise the average price of all shares to $50 per share? Round your answer to the nearest share if necessary.
A) 315
B) no solution
C) 210
D) 525
E) 394
A) 315
Mathematics
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Solve the problem.A solid sanding machine disk has a radius of 6 cm and a mass of 4 kg. Find its moment of inertia with respect to its axis.
A. 72 kg?cm2 B. 24 kg?cm2 C. 144 kg?cm2 D. 288 kg?cm2
Mathematics
Find an equation for the ellipse. Graph the equation.Foci at (4, 7) and (4, 1); length of major axis is 10
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Use the rules of exponents to simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive real numbers.(r1/6s1/6)2
A. r1/36s1/36 B. r1/12s1/12 C. r2s2 D. r1/3s1/3
Mathematics
Write the quotient in the standard form.
A. -i B. i C. 1 D. -1
Mathematics