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Wiskunde

Nog meetkunde, datahantering en waarskynlikheid

Opvoeders afdeling

Memorandum

5.

(a) simmetrie-lyn

(b) 90 grade

4

(c) (i) 6

(ii) 3

(iii) 2

Leerders afdeling

Inhoud

Aktiwiteit: simmetrie en rotasie

5. SIMMETRIE EN ROTASIE

a) Kyk weer na jou tekening by 1 b). Wat noem ons die stippellyn?

_____________________________________________________________________

b) Trek die volgende vierkant af en knip dit uit. Vind die middelpunt deur die hoeklyne in te trek. Druk nou jou vierkant met ’n drukspyker vas op ’n stuk karton. Maak ’n kolletjie in een hoek van die vierkant. Trek dan die omtrek van die vierkant met behulp van jou liniaal en potlood op die karton.

  • Roteer nou die kolletjie kloksgewys (regsom) tot by die volgende hoek.

Hoeveel grade het die vierkant roteer? __________________________________

As jy die vierkant 360 grade roteer, hoeveel keer het jy die vierkant gedraai?

__________________________________________________________________

c) Doen dieselfde met die seshoek en driehoek hier onder.

i) Hoeveel keer roteer die heksagoon in ’n volle omwenteling?

_____________________________________________________________________

ii) Hoeveel keer roteer die driehoeke in ’n volle omenteling? _____________________________________________________________________

iii) Hoeveel keer sal ’n reghoek in ’n volle omwenteling roteer? _____________________________________________________________________

Questions & Answers

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Step 1: Find the mean. To find the mean, add up all the scores, then divide them by the number of scores. ... Step 2: Find each score's deviation from the mean. ... Step 3: Square each deviation from the mean. ... Step 4: Find the sum of squares. ... Step 5: Divide the sum of squares by n – 1 or N.
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The sample of 16 students is taken. The average age in the sample was 22 years with astandard deviation of 6 years. Construct a 95% confidence interval for the age of the population.
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Bhartdarshan' is an internet-based travel agency wherein customer can see videos of the cities they plant to visit. The number of hits daily is a normally distributed random variable with a mean of 10,000 and a standard deviation of 2,400 a. what is the probability of getting more than 12,000 hits? b. what is the probability of getting fewer than 9,000 hits?
Akshay Reply
Bhartdarshan'is an internet-based travel agency wherein customer can see videos of the cities they plan to visit. The number of hits daily is a normally distributed random variable with a mean of 10,000 and a standard deviation of 2,400. a. What is the probability of getting more than 12,000 hits
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1
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a= 0.20233 b=0.3384
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a
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It depends on your business problem or in Machine Learning you could use ROC- AUC cruve to decide the threshold value
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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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