Dr. stein bought 30 notebooks, 60 pencils and 300 erasers to make identical packages with some notebooks, some pencils and some erasers for his students. he used everything he bought, and every student got a package. what is the largest number of students dr. stein can have in his class?

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Select all the statements that apply to this figure

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.