Solve the problem.If u = 9i - 3j and v = -2i + 9j, find u + v.
A. -11i + 6j
B. 6i + 6j
C. 7i + 6j
D. 11i + 6j
Answer: C
Mathematics
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Determine by what factor the numbers differ. In other words, determine how many times larger the first number is than the second.400 million, 8 trillion
A. 5 × 10-4 B. 0.5 × 102/3 C. 5 × 10-7 D. 5 × 10-5
Mathematics
Find the rule that defines each piecewise-defined function.
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Mathematics
Subtract.(2x7 + 7x9 + 5 + 7x8) - (1 - 3x8 + 5x9 + 5x7)
A. 2x9 + 10x8 - 3x7 + 4 B. 12x9 + 4x8 + 7x7 + 4 C. 2x9 + 4x8 + 7x7 + 6 D. 12x9 + 4x8 + 7x7 + 6
Mathematics
Solve the problem.Jeff studied math for 
history for 
and physics for 
How long did he study?
A. 2
hr
B. 
hr
C. 8
hr
D. 
hr
Mathematics