Mathematics PT3

0.001603 is written as 1.603 X 10ⁿ in the standard form. State the value of n.

• 2

• 3

• 4

• 5

Find the product 0.0389 X 0.7. Round off the answer correct to two significant figures.

• 0.027
• 0.028
• 0.03
• 0.02

Diagram 1 shows a net of a cuboid. The cuboid has a square base and the height is twice the length of the side of its base.
Given the total area of the net is 360 cm². Calculate the volume in m³ of the cuboid.

• 2.16 X 10^-4
• 4.32 X 10^-4
• 2.16 X 10²
• 4.32 X 10

Given 4(m - 1) + m = 31 - 2m, find the value of m.

• 22/5
• 32/7
• 5
• 15

If A = {1,3,5,7,9} and B={2,3,5,7}, what is A∪B?

• {3, 5, 7}

• {2, 3, 5, 7}

• {2, 3, 5, 7, 9}

• {1, 2, 3, 5, 7, 9}

7 - 2(3 - y)² =

• 1 - 6y + y²
• 14 - 6y - y²
• -11 + 12y - 2y²
• -11 + 12y + 2y²

Simplify (p¹²q⁸)^1/2 x p^-7q⁶.

• p^-1q¹⁰

• p^-5q¹⁰

• p^5.5q^14.5

• p^-1q^-2

Given 0.2cm represents 25m a map. Find the scale used.

• 1:12.5

• 1:125

• 1:1250

• 1:12500

How many subsets will this set have? W= {a, b, c} ?

• 8

• 6

• 3

• 0

What is the scale factor from ΔDEF to ΔABC?

• 1/2

• 7/3

• 2

• 10/3