Math Revision Quiz

An example of an integer:

• √3

• √-4

• -3/2

• 0

Simplify 5x³(x_²) - 3x⁵

• 2x⁵

• 8x⁵

• 5x

• 2x

10 builders build a house in 20 days. How many days will it take 3 builders?

• 6 days

• 300 days

• 100 days

• 200 days

Increase 60 in a ratio of 2:3

• 60 x 2/3 = 120/3 = 40

• 60 x 3/2 = 180/2 = 90

• 2+3 = 5. 60/5 = 12. 2 x 12 = 24. 3 x 12 = 36. Therefore 24:36

• 60/5 = 12

Jack invests R300 for 5 years at a simple interest rate of 10% p.a. What will his money amount to after 5 years?

• A = P(1 + in). A = 300(1 + 0,1 x 5). A = R450

• A = P(1 + i x n). 300 = P (1 + 0,1 x 5). P = R200

• A = P(1 + i)ⁿ. A = 300(1 + 0,1)⁵. A = R483,15

• A = P(1 + i)ⁿ. 300 = P(1 + 0,1)⁵. P = R186,28

Jack takes out a loan of R2000 at an interest rate of 10% compounded annually. How much will he pay back on the loan if he pays it back after 3 years?

• A = P(1 + in). A = 2000(1 + 0,1 x 3). A = R2600

• A = P(1 + in). 2000 = P(1 + 0,1x3). P = R1538,46

• A = P(1 + i)ⁿ. A = 2000(1 + 0,1)³. A = R2662

• A = P(1 + i)ⁿ. 2000 = P(1 + 0,1)³. P = R1502,63

Simplify: (3x³y⁴)²

• 3x⁶y⁸

• 3x⁵y⁶

• 9x⁵y⁶

• 9x⁶y⁸

Determine angle SRP

• ? = 70 (corresponding angles)

• ? = 60 (alternate angles)

• ? = 130 (exterior angle of a triangle)

• ? = 70 (angles opposite equal sides)

Find the length of c

• C = 8 + 6. C = 14

• C² = 6² + 8². C² = √6² + √8². C² = 6 + 8. C² = 14. C = √14

• C² = 6² + 8². C² = 36 + 64. C² = 100. C = 10

• C = 6² + 8². C = 36 + 64. C = 100

An example of an irrational number

• √-9

• √-3

• √9

• √3