Section 12 Flashcards
1
Q
In set notation:
What does A U B mean?
A
A or B
2
Q
How many vertices does a cube have?
A
8
3
Q
In a right-angled triangle with angle x :
How do we find Tan(x) ?
A
Tan(x) =
Opposite / Adjacent
4
Q
Describe the properties of the diagonals of a square.
A
Perpendicular to each other
and
Bisect each other
5
Q
What is the value of Cos(90) ?
A
0
6
Q
How do you find the volume of a cube with a side length of ‘a’ ?
A
a x a x a
7
Q
If y=k/x and k is a constant,
What is the proportional relationship between x and y ?
A
y is inversely proportional to x
8
Q
How do you calculate the estimate of the mean from a grouped frequency table?
A
- Find the midpoints
- Calculate fx (mini totals)
- Add these to get the grand total
- Divide this by the total frequencies
9
Q
List the first five powers of 2.
A
2, 4, 8, 16, 32
10
Q
What is the value of Sin(30) ?
A
0.5
