Find the standard form of the complex number 
. Round values to the nearest hundredth.
?
A. 5.99 + 0.78i
B. ?5.72 + 1.8i
C. ?4.06 + 2.76i
D. ?-4.06 - 2.76i
E. ?-5.72 - 1.8i
Answer: B
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Solve the equation.a2 = 100
A. 20 B. 121 C. 1024 D. 10
Write the quadratic function in the standard form y = a(x - h)2 + k.y = x2 - 4x
A. y = (x - 4)2 - 16 B. y = (x + 2)2 - 2 C. y = (x - 2)2 - 4 D. y = (x + 4)2 - 4
The light bulbs produced by a generic manufacturer have a stated average life of 1,432 hours. Assume that the lifetimes of the bulbs are normally distributed with a standard deviation of 120 hours. Find the probability that a light bulb from this manufacturer will last longer than 1642 hours. Round your answer to three decimal places.
a. 0.960 b. 0.920 c. 0.040 d. 0.460 e. 0.540
Indicate whether the statement is true always, sometimes, or never.The sum of two imaginary numbers is an imaginary number.
A. Always B. Sometimes C. Never