Solve by the quadratic formula. Simplify answers. Use i notation for nonreal complex numbers.3x2 - 4x - 7 = 0
A. x =
, -1
B. x = 
, 1
C. x = 
, -1
D. x = 
, 1
Answer: A
Mathematics
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Perform the indicated operation.(4x + 7) - (-x + 6)
A. 3x + 13 B. 5x + 1 C. 5x + 13 D. 4x + 13
Mathematics
Solve the system of linear equations.
x - 
y = -18
x + 
y = -9
A. (12, 0) B. (-12, 0) C. (0, 12) D. No solutions
Mathematics
Write the number in scientific notation.0.000416
A. 4.16 × 104 B. 4.16 × 10-4 C. 4.16 × 10-5 D. 4.16 × 10-3
Mathematics
Find 
.
?
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics