Algebra
Solve for x:
3x - 2 = 16
x = 6
What is a natural number AND give an example
Positive, whole numbers or counting numbers. Examples: 1, 15, 101 etc.
What is the median of this set of numbers:
2, 4, 7, 10, 14, 16, 20
median = 10
What name is given to angles less than 90 degrees?
Find the value of: 3(a+2b)
when a=5 and b=2
Answer = 27
Solve the following equations: x + y = 4
x - y = 10
x = 7
y = -3
The ages of customers in a grocery shop were recorded. What is the mode age of people in the shop?
25, 13, 10, 8, 6, 50, 50, 65, 82, 12, 13, 13
mode = 13
What name is given to angles greater than 90 degrees but less than 180 degrees?
Obtuse angles
Multiply and simplify: 10y(3y-2)
Answer=30y2 - 20y
Solve using simultaneous equations: 5x - 2y = 9
3x + y = 1
x = 1
y = -2
13 students take a maths test. The scores from the test are: 99, 41, 60, 61, 90, 47, 62, 85, 75, 70, 72, 55, 73 Rank the dataset:
41, 47, 55, 60, 61, 62, 70, 72, 73, 75, 85, 90, 99
When we have a 'Z' shape caused by parallel lines, angles appear. What is the name for the type of angles that appear?
Alternate Angles
Multiply and simplify: (3x+5)(x-1)
Answer= 3x2+2x-5
Solve: 9p - 4q + 16 = 0
-p + q = -1
p = -4
q= -5
13 students take a maths test. The scores from the test are: 99, 41, 60, 61, 90, 47, 62, 85, 75, 70, 72, 55, 73 Find the mean of the dataset, round to the nearest whole number.
68
When we have an 'X' shape created by two lines, angles form at the center. What type of angles are formed?
Vertically Opposite angles
Solve the following inequality: -7 < 2x + 3 < 11
Answer = -5 < x < 4
p + 2(q - 1) = -12
1/3(p) + q = -5
p = 0
q = -5
13 students take a maths test. The scores from the test are: 99, 41, 60, 61, 90, 47, 62, 85, 75, 70, 72, 55, 73. Find the range of the dataset
58
What is the formula for Pythagoras' Theorem?
C2 = A2 + B2