Write the binomial expansion of the expression.(a - b)6
A. - a6 + 6a5b - 15a4b2 + 20a3b3 - 15a2b4 + 6ab5 - b6
B. a6 + 6a5b + 15a4b2 + 20a3b3 + 15a2b4 + 6ab5 + b6
C. a6 - 6a5b + 15a4b2 - 20a3b3 + 15a2b4 - 6ab5 + b6
D. a6 - 6a5b - 15a4b2 - 20a3b3 - 15a2b4 - 6ab5 - b6
Answer: C
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Write the phrase as a mathematical expression. Use x as the variable.Twice some number
A. 2 + x
B. 2x
C. 
D. 2 - x
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Two marbles are drawn from a bag in which there are 4 red marble and 2 blue marble. The number of blue marbles is counted.
A. 
B. 
C. 
D. 
An observer is 300 feet from a hot air balloon before it lifts off. Determine the angle of elevation, ?, when the balloon reaches a height of feet. State your answer in degrees and round to one decimal place.
Solve the equation.
= 1
A. 
B. 
C. 
D. no real solution