Solve the quadratic equation and simplify your answer. Use i notation for any complex numbers.x2 + x + 7 = 0
A. x = 
B. x = 
C. x = 
D. x = 
Answer: D
Mathematics
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Perform the indicated subtraction.7 - (-7)
A. 0 B. 14 C. -14 D. 1
Mathematics
Solve the problem.The dosage instructions on a prescription call for a patient to take 1
tablets of a 20-milligram medication four times a day for 14 days. How many tablets will the patient take in the 14-day period?
A. 315 tablets B. 84 tablets C. 21 tablets D. 56 tablets
Mathematics
Multiply the monomials.(-2z2)(6z3)
A. 12z6 B. 864z5 C. -12z6 D. -12z5
Mathematics
Perform the indicated operation.8.4 kg + 5.4 kg
A. 13.8 kg B. 30 kg C. 138 kg D. 3 kg
Mathematics