Perform the operation.Multiply 639 by 125
A. 79,865
B. 79,885
C. 79,875
D. 79,975
Answer: C
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Find the center of mass of a lamina in the shape of an isosceles right triangle with equal sides of length a = 15 if the density at any point is proportional to the square of the distance from the vertex opposite the hypotenuse. Assume the vertex opposite the hypotenuse is located at (0, 0), and the sides are along the positive axes.
What will be an ideal response?
Solve the problem.Roberto invested some money at 8%, and then invested $5000 more than twice this amount at 12%. His total annual income from the two investments was $4760. How much was invested at 12%?
A. $3100 B. $31,000 C. $15,000 D. $26,000
Solve the problem.A truck rental company charges $29 plus $0.09 per mile to rent a moving truck for a day. If x represents the number of miles driven and f(x) represents the total cost to rent the truck for a day, a linear function that models the situation is 
What is the cost of renting the truck if it is driven 230 miles?
A. $49.70 B. $6670.09 C. $8.30 D. $31.07
Find the probability.A committee of 9 members is voting on a proposal. Each member casts a yea or nay vote. On a random voting basis, what is the probability that the final vote count is unanimous?
A. 
B. 
C. 
D. 