Round off 452 to the nearest 100
2 answers:
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The mean weight of the packages is 2.5, so the total weight of the packages is found by multiplying 2.5 pounds by 4 which is equal to 10 pounds. That is the tial weight of the four books. To find the weight of the fourth book, the three other weights are subtracted from 10 pounds:
The reflection over the y-axis has a rule:
From the diagram you can see that point W has coordinates (-7,2). Then using the rule given above, you can find the coordinates of point W':
Answer: (7,2).