Solve the equation using the square root property.x2 + 81 = 0
A. {9}
B. {-9, 9}
C. {-9i, 9i}
D. {6561}
Answer: C
Mathematics
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Solve the problem.The caretaker at the mall puts 300 mL of antistatic into the humidifier every day. How many liters are needed for a six-month (30 days/month) supply?
A. 54,000 L B. 540 L C. 54 L D. 5400 L
Mathematics
Identify the number as prime or composite.157
A. Composite B. Prime
Mathematics
Find the quotient.
A. 8
B. -8
C. - 
D. -480
Mathematics
Use a calculator to find the approximate value of the expression rounded to two decimal places.tan 37°
A. 0.60 B. 0.80 C. -0.84 D. 0.75
Mathematics