ZIMSEC A-Level Pure Mathematics Paper 1 November 2019 Marking Scheme

Use this ZIMSEC A-Level Pure Mathematics Paper 1 November 2019 marking scheme for checking answers, revision, and exam preparation in Zimbabwe.

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Questions: ZIMSEC A-Level Pure Mathematics Paper 1 November 2019 Question Paper

Exam board: ZIMSEC
Subject: Pure Mathematics
Level: A-Level
Document: Marking Scheme
Paper: Paper 1
Session: November
Year: 2019
File: PDF, 4.5 MB

About this marking scheme

This is the ZIMSEC A-Level Pure Mathematics marking scheme for Paper 1 from November 2019. It shows how marks are awarded, so you can mark your own answers to the matching question paper. See the question paper.

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Text from the first page

(1)

Noventer 2019
Pue Mathematics
suggested Merking Turde
Pepared By! Tarkino Nyasha P.
TROckERS 1772978151
0777267175
15 October 2019 @ 18:48 pm
Answers
1)
\[
\begin{array}{l}
3^{x-1}+3^{x-2}=12
\frac{3^{x}}{3}+\frac{3^{x}}{3^{2}}=12
\frac{3^{x}}{3}+\frac{3^{x}}{9} \neq 12
\frac{3\left(3^{x}\right)+3^{x}}{9}=12
4\left(3^{x}\right)=12(9)
\frac{4\left(3^{x}\right)}{4}=\frac{12(9)}{4}
3^{x}=3(9)
3^{x}=27
3^{x}=3^{3}
x=3
\end{array}
\]

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