Algebra
2x + 7y + 3x - 2y
5x + 5y
There are 27 students in a class. There are 14 girls in the class and among them, there are 9 that have green eyes. What is the probability of a girl with green eyes in the entire class?
P (girl green eyes) = 9/27 = 1/3
what is the volume of a 6cm cube?
216cm3
What is the mean?
The average number
there are 12 blue cars and 77 red cars. 33 of them are taken to another company and 54 more come in. How many cars are there?
110 cars
What is a pronumeral?
Pronumerals are the letters used in algebra and they stand for numbers
What is sample space?
The range of values in the question
What is the circumference of a circle with a radius of 6mm? (corrected to 2dp)
37mm
Find the median in this equation: 1, 2, 3, 4, 4, 4, 6, 8, 9, 9
4
Name the first 4 numbers in pi (including the decimal point)
3.141
2 (3x - 8)
6x - 16
There are 36 marbles. 21 red, 6 blue and 9 yellow. What is the probability of picking a yellow?
P (Picking a yellow) = 3/12 = 1/4
What is the volume of a cylinder with a radius of 8cm and a height of 14cm? (corrected to 1dp)
2814.9cm3
There are 8 people that take a bus and 12 people that walk to school and 6 people that take both. How many people take either a bus or walk only?
20 people
If a tap pours into a 1-litre bucket at 100mL/10 secs, how long will it take to fill up to bucket
100 seconds = 1 minute and 40 seconds
6x - 12 = 36
x = 8
What is sample size?
The number of people participating in the question
What is the formula to a cone?
V = pi x r2 x height/3
There are 130 red and blue marbles in Ben's collection. 40% of them are red. Find how many marbles are blue
There are 78 blue marbles
What is the difference between the circumference and area of a circle?
The circumference of a circle is the length of its side, the area is the amount of space within it
x = l 1 l 2 l 3 l 4 l 5 l
y = l -3 l - 9 l -15 l -21 l -27 l
y = -6x + 3
32 people are trying out for a basketball team. 10 people make the team. What is the percentage of Ben making the team?
P (making the team) = 10/32 = 5/16 = 31.25%
A road is 20m long x 6000mm wide x 150cm deep. What is the required amount of cement needed to build the road?
180m3
622 people attend a concert. There are 246 men. 86% of the remaining are women. How many children?
53 children
A shop requires $750 weekly to continue to run. If the shop runs for 2 years and 4 months (presuming there are 4 weeks in a month), how much money will it cost them?
$90 000