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As inligting getabelleer word, is dit baie makliker om die patrone wat die getalle vorm raak te sien. Dis waarom tabelle dikwels gebruik word om inligting te organiseer. Jy sal nog baie tabelle in wiskunde gebruik. Maak ‘n tabel vir enige probleem as jy dink die tabel sal help.

Aktiwiteit 2

Om verwantskappe tussen veranderlikes te ondersoek

[lu 2.1, 2.6]

Mnr. en mev. Peters wil ‘n woonwa huur vir hulle vakansie. Hulle het by drie firmas navraag gedoen oor die huur van woonwaens. Nou moet hulle besluit watter woonwa om te huur, en hoe lank. Ons gaan hulle help besluit. Hier volg die woordbeskrywings wat hulle van die firmas ontvang het:

  • Away–van: Hulle woonwaens kos R750 per dag.
  • Best Caravans vra ‘n R1 200 verhuringsfooi, met ‘n R360 daaglikse heffing.
  • Car–a–holiday: Hulle verhuur ‘n woonwa teen R950, met ‘n R540 daaglikse heffing.

1. Rangskik data: Voltooi die volgende tabel vanuit bostaande beskrywings.

Aantal dae: 1 2 3 4 5 6 7 8 9 10 11
Away–van: R750
Best Caravans: R1560 R1920
Car–a–holiday: R1490 R2030

2. Kan jy uit die tabel aflei watter opsie die beste sal wees, afhanklik van die duur van die vakansie?

Skryf ‘n kort opsomming van jou gevolgtrekkings.

3. Hier is ‘n vloeidiagram van die Car–a–holiday pryse. Bereken die waardes vir die oop blokkies:

4. Teken ook vloeidiagramme vir die ander twee opsies.

Bradley hou vakansie in Amerika. Hy wil ‘n selfoon huur. Hy het reeds drie verskillende aanbiedinge ondersoek. Hier volg ‘n woordbeskrywing van aanbod 1, ‘n waarde–tabel vir aanbod 2 en ‘n vloeidiagram vir aanbod 3.

Woordbeskrywings:

Aanbod 1: “ADVANCED MOBILE! Laagste oproepkoste! Gewilde foon ! $20 as jy teken, plus 60 sent per oproep!”

Aanbod 2: “GENIE RENTALS

Aanbod 3: “HI–PRO

Tabelle:

Aantal oproepe: 10 20 30 40 50 60
Advanced mobile:
Genie rentals: $24 $38 $52 $66 $80 $940
Hi–Pro:

*Vloeidiagramme:

Genie rentals:

Hi–Pro:

5. Daar is ruimte vir jou om vir elke geval die ander twee aanbiedinge te voltooi. Ná jy al ses voltooi het, doen die volgende oefening.

6. Skryf neer watter aanbod Bradley moet kies vir watter omstandighede. Onthou, jy weet byvoorbeeld nie of hy die foon vir twee dae, twee weke of twee maande gaan gebruik nie. Jy weet ook nie hoeveel oproepe hy wil maak nie.

7. Skryf nou neer watter een van die drie maniere om die inligting voor te stel jou die meeste gehelp het toe jy vraag 6 beantwoord het. Gee redes vir jou stellings.

Aktiwiteit 3

Om verwantskappe uit te klaar met behulp van ‘n model

[lu 2.2, 2.3]

Olga hou van sjokolade–rosyne. Sy het aantekeninge gemaak van die inhoud van elke pakkie wat sy gekoop het. Sy koop altyd by dieselfde winkel, maar partykeer koop sy klein pakkies (50 g), partykeer medium pakkies (100 g) en partykeer groot pakkies (200 g).

Sy het ‘n tabel van die gegewens gemaak.

Pakkie–grootte 50 g 100 g 200 g
Gemiddelde aantal rosyne 78 153 304
Prys per pakkie R3,80 R7,40 R14,50

Olga het die vervaardigers opgespoor en by hulle uitgevind dat ‘n deel van die prys vir die verpakking is, en die res vir die inhoud. Die verpakkingskoste is redelik eenders vir die drie groottes, maar die grootste deel van die prys dek die rosyne. Die eenheidsprys van die inhoud is dieselfde, ongeag die pakkiegrootte.

Questions & Answers

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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Source:  OpenStax, Wiskunde graad 9. OpenStax CNX. Sep 14, 2009 Download for free at http://cnx.org/content/col11055/1.1
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