Some of the steps in the derivation of the quadratic formula are shown. Step3: -c+b^2/4^a=a(x^2+b/a x+b^2/4a^2
Step 4a: -c+b^2/4a=a(x+b/2a)^2
Step 4b: -4ac/4a+b^2/4a=a(x+b/2a)^2

Which best explains or justifies Step 4b?

A. Factoring a polynomial
B. Multiplication property of equality
C. Converting to a common denominator
D. Addition property of equality

The price of a particular stock is represented by the linear equation , where x represents the number of weeks the stock has been owned and y represents the price of the stock, in dollars. if this relationship continues, what is the price of the stock after it has been owned for 12 weeks? $92.55 $94.37 $100.52 $114.39

15 points! write the slope-intercept form of the equation of the line through the given point with the given slope. use y-y = m(x-x) to solve. through (2,5) slope= undefined

Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.