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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

it is the relatively stable flow of income
Chidubem Reply
what is circular flow of income
Divine Reply
branches of macroeconomics
SHEDRACK Reply
what is Flexible exchang rate?
poudel Reply
is gdp a reliable measurement of wealth
Atega Reply
introduction to econometrics
Husseini Reply
Hi
mostafa
hi
LEMLEM
hello
Sammol
hi
Mahesh
bi
Ruqayat
hi
Ruqayat
Hi fellas
Nyawa
hey
Sammol
hi
God
hello
Jahara
Good morning
Jorge
hi
abubakar
hi
Nmesoma
hi
Mahesh
Hi
Tom
Why is unemployment rate never zero at full employment?
Priyanka Reply
bcoz of existence of frictional unemployment in our economy.
Umashankar
what is flexible exchang rate?
poudel
due to existence of the pple with disabilities
Abdulraufu
the demand of a good rises, causing the demand for another good to fall
Rushawn Reply
is it possible to leave every good at the same level
Joseph
I don't think so. because check it, if the demand for chicken increases, people will no longer consume fish like they used to causing a fall in the demand for fish
Anuolu
is not really possible to let the value of a goods to be same at the same time.....
Salome
Suppose the inflation rate is 6%, does it mean that all the goods you purchase will cost 6% more than previous year? Provide with reasoning.
Geetha Reply
Not necessarily. To measure the inflation rate economists normally use an averaged price index of a basket of certain goods. So if you purchase goods included in the basket, you will notice that you pay 6% more, otherwise not necessarily.
Waeth
discus major problems of macroeconomics
Alii Reply
what is the problem of macroeconomics
Yoal
Economic growth Stable prices and low unemployment
Ephraim
explain inflationcause and itis degre
Miresa Reply
what is inflation
Getu
increase in general price levels
WEETO
Good day How do I calculate this question: C= 100+5yd G= 2000 T= 2000 I(planned)=200. Suppose the actual output is 3000. What is the level of planned expenditures at this level of output?
Chisomo Reply
how to calculate actual output?
Chisomo
how to calculate the equilibrium income
Beshir
Criteria for determining money supply
Thapase Reply
who we can define macroeconomics in one line
Muhammad
Aggregate demand
Mohammed
C=k100 +9y and i=k50.calculate the equilibrium level of output
Mercy Reply
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Isiaka
Hi
Geli
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Man
👋
Bahunda
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Amisha
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Sekou
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Amisha
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Amisha
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Geli
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Amisha
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Amisha
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Amisha
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Sekou
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Amisha
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Amisha
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Amisha
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Amisha
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Amisha
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Amisha
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Amisha
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Amisha
money as unit of account means what?
Kalombe
A unit of account is something that can be used to value goods and services and make calculations
Jim
all of you please speak in English I can't understand you're language
Muhammad
I want to know how can we define macroeconomics in one line
Muhammad
it must be .9 or 0.9 no Mpc is greater than 1 Y=100+.9Y+50 Y-.9Y=150 0.1Y/0.1=150/0.1 Y=1500
Kalombe
Mercy is it clear?😋
Kalombe
hi can someone help me on this question If a negative shocks shifts the IS curve to the left, what type of policy do you suggest so as to stabilize the level of output? discuss your answer using appropriate graph.
Galge Reply
if interest rate is increased this will will reduce the level of income shifting the curve to the left ◀️
Kalombe
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Source:  OpenStax, Wiskunde graad 7. OpenStax CNX. Oct 21, 2009 Download for free at http://cnx.org/content/col11076/1.2
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