Express in terms of i.
A. 6i
B. 6
C. -6i
D. -6
Answer: A
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Find v ? u.v = 7i - 4j and u = -9
i + 9j
A. -36
+ 63
B. (7 - 9
)i + 5j
C. -36
i - 63j
D. -36 - 63
Factor out the greatest common factor.x2(x - 2) - (x - 2)
A. (x - 2)(x2 + 1) B. x2(x - 2) C. (x3 - 2x2) - (x - 2) D. (x - 2)(x2 - 1)
Citation Manufacturing produces electronic components that sell for $600 each. The fixed production costs are $720,000 when 30,000 or fewer components are produced, and variable production costs are $510 per component. What is Citation's operating breakeven point?
A. 8,000 components B. 1,200 components C. 1,412 components D. $720,000 in sales E. $389,189 in sales
Solve.A plane makes a 240-mile trip against a head wind in 1 hour and 30 minutes and returns, with a tail wind of the same speed, in 1 hour. What is the speed of the wind?
A. 40 mph B. 200 mph C. 160 mph D. 80 mph