(c) A student was asked to rearrange the formula d 10a - 2c(6 – d) to make d the subject (assuming that 1 + 14c 4 0). The student's incorrect attempt is shown below. 10a =-206-d) Clear the fractions By multiplying By 7 10 a = d-20b -d) Multiply out the Bracket 10 a = d-12c- 20d Collect the d terms 10 a +12c = d-20d Factorise 10 a+120 = d(l –20) Divide By I-20 to Give 10 a +12c |-20 d=

(c) A student was asked to rearrange the formula d 10a - 2c(6 – d) to make d the subject (assuming that 1 + 14c 4 0). The student's incorrect attempt is shown below. 10a =-206-d) Clear the fractions By multiplying By 7 10 a = d-20b -d) Multiply out the Bracket 10 a = d-12c- 20d Collect the d terms 10 a +12c = d-20d Factorise 10 a+120 = d(l –20) Divide By I-20 to Give 10 a +12c |-20 d=

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

ChapterP: Preliminary Concepts

SectionP.3: Informal Geometry And Measurement

Problem 9E: Must two different points be collinear? Must three or more points be collinear? Can three or more...

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