Algebra
Evaluate the expression 2x − 3y when x = -2 and y = 9
-27
Jennifer needs to fence her country house block to keep her dog in. The block is a rectangle with length 50 m and width 42 m. Fencing costs $13 per metre. What will be the total cost of fencing?
$2,392
find 56% of 80
44.8
Two four side dices (1,2,3,4) are rolled, the numbers are added together. What is the probability of getting a 4?
3/16
Simplify 12:36
1:3
a2 + 5b - 2a2 + 3ab + ab - b + 5a2
4a2 + 4ab + 4b
Find the area of a square if it's perimeter is 20cm.
25cm2
Find 2/9 of $63
$14
Find the mode and the mean for this set of data.
12, 4, 3, 16, 12, 9, 7, 12, 4, 11
mean 9
mode 12
Find the next term for this sequence
4 -1 -6 -11 -16
-21
Write an expression for "sum of 3 and double a number".
2x+3
What is the perimeter of an equilateral triangle with side length 1.9cm?
5.7cm
A lolly costs $2.50 and an ice-cream costs $3.25. Jon bought 3 lollies and 4 ice-creams. How much did he pay altogether?
$20.50
A bag contains 5 blue, 3 red and 4 yellow marbles. What is the probability of NOT choosing a yellow marble?
8/12 or 2/3
5 apples cost $6. What is the cost of 12 apples?
$14.40
Evaluate the expression if x=-1
(3x + 9)/2
3
What is the height of a triangle that has a base of 13 cm and an area of 45.5 cm2.
7cm
4/2 + (22+3)2 x 2 - 21
79
Here is a frequency tables for a pie chart
COLOUR FREQUENCEY ANGLE
Blue 12
Red 8
Yellow 11
Green 5
Find the angle required for thecolour red.
80
Divide $144 into the ratio 9:3:6
$72 $24 $48
Solve 3(x+2) = 30
x=8
Find the surface area of a rectangular prism with
Height 4cm
Width 10 cm
Depth 3 cm
164cm2
Find the HCF and LCM of 124 and 105
hcf 1
lcm 13020
The mean of 12 scores is 60. Another score is added and the new mean becomes 62. What is the score?
86
James andy and bob share money in a ratio of 9:5:6 James Recieves $24 more than andy.
How much did they share all together
$120