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Use the data found in this article’s abstract (it is located about midway through the abstract) to determine the probability that someone in the Pfzier/BioNTech vaccine clinical trial had no infections given that they took the BNT162b2 vaccine and probability that someone in the Moderna vaccine clinical trial had no infections given that they took the mRNA-1273 vaccine. Based on these probabilities, which vaccine is safer (leads to less infections)? Make sure to explain how you determined your answers. Include any formulas used and/or calculator functions used. 

Een van die geregistreerde kursusgangers het die volgende e-pos ontvang en jou gebel om te vra waaroor dit gaan, aangesien hulle behoorlik geregistreer het en ‘n fooi betaal het soos versoek is.  Maak die prentjie in ‘n nuwe tab oop.   Regsklik op hierdie knoppie en selekteer die “Open in new tab” opsie. Verduidelik aan haar wat gebeur het deur die volgende vrae te beantwoord.  

1.1.5 A business cycle that lasts for 15 to 20 years and is caused by changes in the building and construction industry is called …. (2)

8.2 Hoe kan ‘n mens die invoer van duplikaatrekords voorkom wanneer data in ‘n databasistabel ingevoer word? (1)

1.1.2 When there is a complete ban on the import or export of a certain good or service. (2)

1.1.8 Prudent fiscal policy lays down the …. rule, suggesting that budget deficits should only be used for capital expenditure. (2)

(difícil) estudiar química es _____________ leer el periódico.

6.5 Noem EEN die voordeel daarvan om vormvelde te gebruik om data in elektroniese vorms in te voer. (1) 6.6 Gee TWEE algemene voordele daarvan om ‘n databasis in plaas van ‘n sigblad te gebruik om data te manipuleer en te verwerk. (2)

QUESTION 12 12.1  Write 54 : 36 as a ratio in its simplest form. (1) 12.2 Share $320 between Angela and Khumo in the ratio 3 : 5. Be sure to write clearly who gets how much of the money. (2) 12.3 A company makes chocolate bars in two sizes. Small bars have a mass of 100g. Large bars have a mass of 250g. The company makes the bars in the ratio number of small bars : number of large bars of 3 : 2. Write this ratio in terms of mass. Give your answer in the simplest form. (2) 12.4 It takes 180ml of fertiliser to treat 36 m2 of lawn. Calculate how much fertiliser is needed to treat a lawn of 40 m2. (2)   TOTAL QUESTION 12 [7]

QUESTION 6 6.1  Work out the area of the triangle shown by this diagram. Give the units with your answer. Right-click on the blue button to open the triangle in a new tab. (2) 6.2 In the diagram below, the white shape is made up of a triangle joined to a square. The shape is enclosed by a rectangle with a height of 10cm and a width of 6cm. Calculate the area of the white shape. Right-click on the blue button to open the diagram in a new tab. (3)   TOTAL QUESTION 6 [5]