Section 12 Foundation

Question 1

In set notation what does the union A ∪ B represent?

Answer 1

A or B or both

Question 2

How many vertices does a cube have?

Answer 2

8

Question 3

In a right-angled triangle with angle x how do we find tan x?

Answer 3

tan x = opposite / adjacent

Question 4

Describe the properties of the diagonals of a square

Answer 4

The diagonals are perpendicular to and bisect each other.

Question 5

What is the formula for the curved surface area of a cylinder with height h and radius r.

Answer 5

2πrh

Question 6

What’s the value of cos 90?

Answer 6

0

Question 7

Sketch y = 1/x

Answer 7

Reciprocal graph

Question 8

How do you find the volume of a cube with side length x?

Answer 8

x³

Question 9

If y = k/x what’s the proportional relationship between x and y?

Answer 9

y is inversely proportional to x

Question 10

In a grouped frequency table where x represents midpoint and f represents frequency, what formula can we use to find an estimate of the mean?

Answer 10

Sum of (f time x) divided by sum of x

Question 11

List the first 5 powers of 2

Answer 11

2, 4, 8, 16, 32

Question 12

What’s the value of sin 30?

Answer 12

0.5