Yommms

25.03.2021 • 

Mathematics

CLASSTEST 75-R-
QUESTION 1
A group of learners at Or Sam Motsuenyane Secondary School decided to participate in a soce
tournament. They wanted to raise funds for the trip and decided to sell pens. They decided to
sell the pens at R3,00 each, as represented on the table below:
D
10
5
25
75
20
60
3
0
45
30
С
9
0
Number of pens sold
Income in rand
Calculate the value of C using the information in the table.
1.2. Calculate the value of D using the information in the table.
Use the table above to draw a straight line on the diagram sheet provided.
Label this graph as income.
13
INCONEAN LENSES
SEROMS LES OF PENS​

Ответ:

cooboy

02.02.2023

Mathematics

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-3(k+7)-5k+4=23
-3k-21-5k+4=23
Get rid of the numbers that aren't being multiplied by k:
-3k-5k=23+21-4
Add like things:
-8k=40
Divide by -8 on both sides to get k by itself and to make the equation even:
k=-5

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