Perform the indicated division and find a simplified expression.If a submarine goes 2k3 + 13k2 + 10k - 25 miles in 2k + 5 hours, what is its rate of speed?
A. k2 + 4k - 5 miles/hr
B. k2 + 9k - 5 miles/hr
C. k2 - 4k + 5 miles/hr
D. k3 + 4k2 - 5k miles/hr
Answer: A
Mathematics
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Solve the indicated system of equations algebraically.A certain amount of money saved for 1 year at a certain annual interest rate (simple interest) yielded $23.04 in interest. If we had added $64 to the principle and reduced the interest rate by 3 percentage point(s), the interest would have been the same. Find the principle and the rate.
A. $15.00, 12% B. $6.45, 17% C. $15.00, 9% D. $192.00, 12%
Mathematics
Evaluate the limit.
Mathematics
Simplify. Assume that all variables represent positive real numbers.
- 
A. (3x3y2 - 2x4y)
B. (3x3y2 + 2x4y)
C. (3x3y2 + 2x4y)
D. (3x6y4 - 2x9y)
Mathematics
Solve the equation.5(2z - 4) = 9(z + 5)
A. {25} B. {30} C. {-25} D. {65}
Mathematics