Suppose the test scores on an exam show a normal distribution with a mean of 78 and a standard deviation of 8. Within what range do about 95% of the scores fall?

Which transformations could have occurred to map △abc to △a"b"c"? a rotation and a reflection a translation and a dilation a reflection and a dilation a dilation and a rotation

Which of the following are accepted without proof in a logical system? check all that apply.

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?