Find the sum or difference. Write the answer in standard form, a + bi.7i + (-2 - i)
A. -2 + 6i
B. 2 - 6i
C. -2 + 8i
D. 2 - 8i
Answer: A
Mathematics
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Ln x = 4.2. Find x.
What will be an ideal response?
Mathematics
Perform the indicated operation.10.4 cm × 2
A. 20.8 cm B. 208 cm C. 2.08 cm D. 5.2 cm
Mathematics
Provide an appropriate response.The life expectancy (in years) of patients after they have contracted a certain disease is exponentially distributed with k = 0.4. Find the mean life expectancy and the standard deviation.
What will be an ideal response?
Mathematics
Find the value of the polynomial at the given replacement values.x3 + 3x2 - 4x when x = 2
A. 12 B. -24 C. 28 D. -4
Mathematics