If a data value in a normal distribution has a negative z-score, which of the following must be true?
the data value must be negative.
the data value must be positive
the data value must be less than the mean.
the data value must be greater than the mean.

Which expressions are equivalent to -6 + 3m

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.