Financial Maths
A t-shirt costs $40. It is discounted by 50%. What is the sale price?
$20
A right-angled triangle has sides 6 cm and 8 cm. Find the hypotenuse.
10 cm
3x + 5x
8x
Find the mode: 4,6,8,8,10
8
Which planet is known as the Red Planet?
Mars
You invest $500 at 6% simple interest per year for 3 years. How much interest is earned?
$90
A ladder is 5 m long and reaches 4 m up a wall. How far is the base from the wall?
3 m
5x + 5x -2
10x-2
Find the median: 3, 5, 7, 9, 15, 18
8
How many sides does a hexagon have?
6
A laptop costs $1200. You pay a 20% deposit. How much is left to pay?
$960
In a right-angled triangle, the opposite side is 6 cm and the hypotenuse is 10 cm. Find sinθ
0.6
Expand 3(x+4)
3x + 12
Find the range: 22, 17, 30, 14, 25, 19
16
Which element has the chemical symbol Au?
Gold
An item costs $85 and GST of 10% is added. What is the final price?
$93.50
A tree casts a 12 m shadow. The angle of elevation to the top of the tree is 40∘ Find the height of the tree. (1 d.p.)
10.1 m
Factorise 6x + 24
6 (x+4)
A survey of 120 students found:
What percentage chose basketball?
Answer: 30%
Which language has the most native speakers in the world?
Mandarin Chinese
A savings account contains $2000 and earns 5% compound interest annually. How much money will be in the account after 2 years? (Round to the nearest dollar.)
$2205
From a point 30 m away from a building, the angle of elevation to the top is 58∘. Find the height of the building. (1 d.p.)
48.0 m
Factorise x2+ 7x + 12
(x+3) (x+4)
The heights (cm) are:
152, 158, 161, 163, 164, 166, 168
What is the median and range?
Answer:
Median = 163 cm
Range = 16 cm
What year did humans first land on the Moon?
1969