Solve by the quadratic formula. Simplify answers. Use i notation for nonreal complex numbers.x2 + x + 2 = 0
A. x = 
B. x = 
C. x = 
D. x = 
Answer: D
Mathematics
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Find the magnitude.Let u = 
. Find the magnitude (length) of the vector: 5u.
A. 5
B. -5
C. 5
D. 
Mathematics
Solve the problem.Anne and Nancy use a metal alloy that is 16% copper to make jewelry. How many ounces of an alloy that is 10% copper must be mixed with an alloy that is 20% copper to form 55 ounces of the desired alloy?
A. 33 ounces B. 22 ounces C. 24 ounces D. 38 ounces
Mathematics
Write the expression in the standard form a + bi.(1 - 8i)2
A. 1 - 16i + 64i2 B. -63 - 16i C. 65 - 16i D. -63
Mathematics
Determine whether the functions f(x) and g(x) are inverse functions.f(x) = 2x, g(x) = -2x
A. Yes B. No
Mathematics