Write the sum or difference in the standard form a + bi.8i + (-2 - i)
A. 2 - 9i
B. -2 + 9i
C. 2 - 7i
D. -2 + 7i
Answer: D
Mathematics
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Find the square root of the positive variables.
A. |c2| B. c2 C. c D. |c|
Mathematics
Solve the problem.The temperature in Verlander is modeled by 
where T(x) is the temperature in degrees Fahrenheit on day x, with 
representing January 1 and 
representing December 31. Find the temperature on May 20.
A. 72°F B. 83°F C. 70°F D. 64 °F
Mathematics
Use a calculator to express the number rounded to three decimal places, and truncated to three decimal places.
A. 1.287 1.286 B. 1.286 1.286 C. 1.287 1.287 D. 1.286 1.287
Mathematics
Rewrite the number as a product using the power of 10 as a factor.89,000
A. 890 ? 102 B. 890 ? 101 C. 8902 ? 10 D. 890 ? 103
Mathematics