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South Africa
2 Solve for x and y by using the method of elimination: (a) x−y=2 and 2x+y=10 (b) x+y=−5 and 3x+y=−9 (c) x+2y=5 and x−y=−1 (d) 3x+5y=8 and x−2y=−1 (c) 2x−3y=10 and 4x+5y=42
Álgebra Mar 24, 2025
List THREE causes of vibrations in machines, motors, engines or pumps 1.8 Examining components for defects can be grouped into different categories. Explain the difference between structural faults and design error. QUESTION 2 2.1 Indicate whether the following statements are TRUE or FALSE. Choose the answer and write only 'true' or 'false' next to the question number (2.1.1-2.1.5) in the ANSWER BOOK. 2.1.1 You need to pre-clean the components before you dismantle it by removing all the grease and grime so that you can see the surface of the component clearly. 2.1.2 A solvent is a chemical that is used to dissolve another substance and the type of solvent you use does not depend on the type of lubricant you need to remove from the component. 2.1.3 Most people start with a job and then fetch the tools as they need them; this is a very efficient way to work and should be used by a well-trained technician. 2.1.4 One of the most important inspection methods for mechanical parts is to measure the parts and compare them with
Ingeniería Mar 24, 2025
QUESTION 1: TRUE OR FALSE a) The inverse operation of addition is subtraction. b) The following numbers are ALL integers: 9;54;−6;16;0 c) 52 and 3 are both whole numbers.
Aritmética Mar 24, 2025
Simplify to a single term, WITHOUT the use of a calculator cos⁡(90∘+x)⋅tan⁡(540∘+x)⋅cos⁡(180∘−x)+sin⁡(−90∘)
Trigonometría Mar 24, 2025
Calculate the ratio of DBDC. If M is a point on AD such that AC∥MB, calculate the ratio of  Area △MBD Area △ACD. If it is further given that the gradient of AD is -4 and the length of AD 612 units, calculate the coordinates of A.
Geometría Mar 24, 2025
QUESTION 5 5.1. Mr Mlungu saves money for his intended visit to the White house in USA during the upcoming holiday. He keeps himself updated with the exchange rates by watching the daily business news on TV. On a particular day the Rand/ US dollar exchange rate was $1= R18, 16. How many US dollar will he get in exchange for his savings of R175 000? 5.2. Skomota wants to buy an iron listed with a cost price of R320, before VAT is charged. If VAT is 15%, what is the total cost of the iron after VAT is added? 5.3. A furnisher buys a chair at a cost price of R150 at a wholesaler and sells it at R275. Calculate his profit. [1) TOT YZo TAL MARKS: 50
Aritmética Mar 24, 2025
Exicises Salve for x and y by using the method of substitution: (9) x−y=2 and 2x+y=10 (a) y=3x=−2 and 7x−2y=8 (i) 3x+5y=8 and x−2y=−1 (d) 7x−3y=41 and 3x−y=17
Álgebra Mar 24, 2025
Given that sin⁡10∘=k Without using a calculator, write each of the following in terms of k : 5.3.1 sin⁡190∘ 5.3.2cos⁡20∘ 5.3.3cos⁡50∘
Trigonometría Mar 24, 2025
3.1 (x−2)2+(x−2)2(x−2)4+……. form a geometric series. 3.1.1 Write downithe common ratio. Determine the value(s) of x for which the series will converge. Mr Peter gave his four sons R 8400 to share, such that their shares formed terms of a geometric sequence. The largest share was 27 times the smallest share. Determine the amount each son received.
Álgebra Mar 24, 2025
3.1(x−2)2+(x−2)2+(x−2)4+… form a geometric series. 3.1.1 Write down the common ratio.
Álgebra Mar 24, 2025
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