Find the net cost equivalent and the percent form of the single discount equivalent for the following series discount.25/20
A. 0.55; 45%
B. 0.4; 60%
C. 0.45; 55%
D. 0.6; 40%
Answer: D
Mathematics
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Solve by the substitution method.0.7x + 0.2y = -0.1 x - 0.7y = -3.1
A. {(-1, 3)} B. {(3, -1)} C. {(-0.1, 0.3)} D. ?
Mathematics
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
Mathematics
Identify the complex number as real or imaginary.-3i + 
A. Imaginary B. Real
Mathematics
Use the factor theorem to decide whether or not the second polynomial is a factor of the first.x3 - 6x2 + 13x - 20; x - 4
A. Yes B. No
Mathematics