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
Bonus! Your team wins 100 points.
100 points!
Two four-sided dices (1,2,3,4) are rolled, the numbers are added together. What is the probability of getting a 4?
(1,3) (3,1) (2,2)
3 x (1/4 x 1/4) = 3/16
You are generous! You get 200 points and you give 200 points to another team.
give 200 points to your fav team!
simplify: a2 - 5b - 2a2 - 3ab + ab - b + 5a2
4a2 - 2ab - 6b
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 "product of 3 and treble a number, then square the result".
(3 x 3y)2 = (9y)2= 81y2
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. Max bought 3 lollies and 4 ice-creams. How much did he pay altogether?
$20.50
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 the red colour.
80 degree
Evaluate (√324 ÷ √256 )2
(18 ÷ 16)2 = (9/8)2 = 81/64
Evaluate the expression if x= -1
(3x + 9)/-23
6/-8 = -3/4
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
A bag contains 5 blue, 3 red and 4 yellow marbles. 2 marbles are chosen at random. What is the probability of NOT choosing a yellow marble?
(not yellow, not yellow) = 8/12 x 7/11 = 14/33
Write the line equation which is parallel to 2y = 6 - 4x and passes through (3,-2).
y = -2x + 4
Triple the sum of a number and 2 is 30. What is the number?
x=8
Find the surface area of a rectangular prism with
Height 4cm
Width 10 cm
Depth 3 cm
164cm2
Find the LCM of 124 and 105
LCM = 630
The mean of 12 scores is 60. Another score is added and the new mean becomes 62. What is the score?
86
How many faces are there in a Dodecahedron?
12 faces (pentagonal)