Express the given vector as a linear combination of the unit vectors i and j.t = 
A. 10i - 8j
B. 8i - 10j
C. -10i + 8j
D. -8i + 10j
Answer: B
Mathematics
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Multiply.(2x + 5)2
A. 4x2 + 20x + 25 B. 2x2 + 20x + 25 C. 2x2 + 25 D. 4x2 + 25
Mathematics
Solve the problem.A building contractor finds that 
can of pipe joint compound is needed to plumb each new home. How many homes can be plumbed with 18 cans of compound?
A. 7
homes
B. 45 homes
C. 18 homes
D. 22
homes
Mathematics
Solve the system, if possible.
?
?
A. 
B. 
C. 
D. 
E. no solution; inconsistent system
Mathematics
The amount P is deposited in an account giving R% annual interest compounded n times a year. Find the amount A in the account after t years.P = $19,000, R = 5%, n = 2, t = 5
A. $24,249.35 B. $24,321.61 C. $21,496.76 D. $23,750.00
Mathematics