Find the sum and simplify the answer.
+ 
+ 
A. 1
B. 
C. 1
D. 1
Answer: A
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Find the standard deviation.Lisa is currently taking an astronomy class. The instructor often gives quizzes. On the past seven quizzes, Lisa earned 47, 18, 36, 29, 15, 42, and 77. Find the standard deviation. Round your answer to one decimal place.
A. 20.9 B. 12,588 C. 36 D. 9,956.6
Solve the equation exactly in the complex number system.6x3 + 6x = 0
A. x = 0, x = ±1 B. x = ±i C. x = -6, x = ±i D. x = 0, x = ±i
Solve the problem. Write the answer in lowest terms.A nursery supplier has 
acre of land, and he purchases another 
acre. He wants to plant trees and shrubs, and he has already planted 
acre with shrubs. How much land is left to plant trees?
A. 
acre
B. 
acre
C. 2
acre
D. 
acre
Find absolute maximum and minimum values of the function, if they exist, over the indicated interval. Where no interval is specified, use the real line. List your answers in terms of ordered pairs.
