Use the given vectors to find the specified scalar.u = 7i + 9j and v = -14i - 7j; Find u ? v.
A. -98
B. -63
C. -35
D. -161
Answer: D
Mathematics
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Simplify by adding or subtracting like terms.19x - 7y + 7 - 6x - 2 - 5y
A. -13x - 2y + 5 B. 13x - 2y + 5 C. -13x - 12y + 5 D. 13x - 12y + 5
Mathematics
Evaluate the function at the given value of x.f(x) = 9 - 3x2, f(-5)
A. 24 B. -66 C. 84 D. 39
Mathematics
Identify the number as prime, composite, or neither.1
A. Composite B. Neither C. Prime
Mathematics
Simplify by finding the absolute value.-
A. - 
B. - 4
C. 
D. 4
Mathematics