<< Chapter < Page Chapter >> Page >

Wiskunde

Nog meetkunde, datahantering en waarskynlikheid

Opvoeders afdeling

Memorandum

20.3 (a) (i) ‘n half (een uit 2)

(ii) ‘n half (een uit 2)

(c) ‘n kwart (een uit 4)

(d) 2 uit 21

20.4 (a) een sesde (een uit 6)

20.5 ses uit 36 (een sesde)

22. KLAAR MET GRAAD SEWE SE WISKUNDE!

MODULETOETS 9

1. Kontroleer leerder se poging.

2. gly

3. (a) Net ‘n deel van die groep is ondervra om inligting te kry.

(b) Gaan oor moontlikheid dat iets sal gebeur of nie.

4. (a) 10

(b) 10

(c) 10,6

5. (a) prentgrafiek / pictogram

(b) Leerders is 6 jaar en ouer in Gr.1. / Niemand jonger as 6 jaar in die skool nie.

(c) 110

(d) 30

(e) 680

6.

7.4 4 uit 32 (een agste)

Leerders afdeling

Inhoud

Aktiwiteit: waarskynlikheid [lu 5.10, lu 5.9]

20. WAARSKYNLIKHEID

20.1 Klasbespreking

a) Wat is die kans dat jy Graad 7 sal slaag?

b) Wat is die kanse dat dit vandag sal reën?

c) Wat is jul sportspan (enige sport) se kans om die volgende wedstryd te wen?

d) Wat is jou kans om die Lotto te wen?

e) Wat is die kans dat jy eendag op die maan sal loop?

20.2.1 Het jy geweet?

In bogenoemde gevalle het jul eintlik geskat wat die waarskynlikheid is dat iets sal gebeur of nie sal gebeur nie.

20.2.2 Het jy ook geweet?

Waarskynlikheid strek vanaf “ geen kans ” dat iets sal gebeur nie tot “ dit sal beslis gebeur ”.

’n Waarskynlikheid van 0 beteken dat die gebeurtenis nooit sal plaasvind nie.

’n Waarskynlikheid van 1 beteken die gebeurtenis sal beslis plaasvind.

20.2.3 BELANGRIK om te WEET:

Die waarskynlikheid dat iets sal plaasvind, is:

Die aantal kere wat dit kan plaasvind

Totale aantal moontlikhede

Hoe nader jou antwoord aan 1 is, hoe groter is die waarskynlikheid dat die gebeurtenis sal plaasvind.

20.3 Werk saam met ’n maat en beantwoord die volgende vrae:

a) Jy skiet ’n munstuk in die lug op. Wat is die waarskynlikheid dat dit sal val met:

i) munt bo? ________________________

ii) kruis bo? _________________________

b) Skiet ’n munstuk 50 keer in die lug op. Jou maat kan jou help rekord hou van watter kant elke keer bo land.

i) Voltooi die tabel

Munt Kruis
Waarskynlikheid
Munt Kruis
Bv. 4 6 4 10 size 12{ { { size 8{4} } over { size 8{"10"} } } } {} 6 10 size 12{ { { size 8{6} } over { size 8{"10"} } } } {}
Eerste 10 gooie: ............. ............. ............. .............
Tweede 10 gooie: ............. ............. ............. .............
Derde 10 gooie: ............. ............. ............. .............
Vierde 10 gooie: ............. ............. ............. .............
Vyfde 10 gooie: ............. ............. ............. .............

ii) Wat is die gemiddelde van jou gooie vir:

a) munt: _______________________

a) kruis: ________________________

c) Wat is die waarskynlikheid dat beide muntstukke met die muntkant bo sal val as jy twee munte gelyktydig opskiet?

_____________________________________________________________________

d) ’n Deelnemer aan die Lotto moet ’n blou bal uit die houer haal om ’n prys te wen. As daar 19 pienk balle en 2 blou balle in die houer is, wat is die waarskynlikheid dat die deelnemer ’n prys sal wen?

_____________________________________________________________________

20.4 Werk nou op jou eie. Jy benodig ’n dobbelsteen.

a) Wat is die waarskynlikheid dat ’n dobbelsteen met die 3 na bo sal val as jy dit gooi? _____________________________________________________________________

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Wiskunde graad 7. OpenStax CNX. Oct 21, 2009 Download for free at http://cnx.org/content/col11076/1.2
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Wiskunde graad 7' conversation and receive update notifications?

Ask