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five cubes are lined up in order of size to form a solid. the side of each smaller cube is completely touching the side of the adjacent larger cube. the side lengths of the cubes are 1 ft, 2 ft, 3 ft, 4 ft, and 5 ft. what is the surface area of the solid?
the figure shows five cubes resting against one another side by side. the first cube has a side length of 1 foot. one face of this cube rests flat against the left face of the second cube which has a side length of 2 feet. one face of the second cube rests flat against the left face of the third cube which has a side length of 3 ft. one face of the third cube rests flat against the left face of the fourth cube which has a side length of 4 feet. one face of the fourth cube rests flat against the left face of the fifth cube which has a side length of 5 feet.

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

In a study of the relationship between socio-economic class and unethical behavior, 129 university of california undergraduates at berkeley were asked to identify themselves as having low or high social-class by comparing themselves to others with the most (least) money, most (least) education, and most (least) respected jobs. they were also presented with a jar of individually wrapped candies and informed that the candies were for children in a nearby laboratory, but that they could take some if they wanted. after completing some unrelated tasks, participants reported the number of candies they had taken. it was found that those who were identiď¬ed as upper-class took more candy than others. in this study, identify: (a) the cases, (b) the variables and their types, (c) the main research question, (d) identify the population of interest and the sample in this study, and (e) comment on whether or not the results of the study can be generalized to the population, and if the ď¬ndings of the study can be used to establish causal relationships.