Topic: PROPORTION – DIRECT, INVERSE AND RECIPROCALS Direct proportion If two quantities are in direct proportion, as one increases, the other increases by the same percentage. If y is directly proportional to x, this can be written as y ∝x A simple example of two things that are in the same proportion is the amount
Classwork Series and Exercise {Mathematics – JSS3}: Proportion Read More »
JSS 3 Mathematics First Term Week 6 Topic: FORMULAE: SUBSTITUTION AND CHANGE OF SUBJECT Formulae and substitution A formula is an equation with letters which stands for quantities. For example C = 2πr Is the formula which gives the circumference, c, of a circle of radius r. In science, I = V/R Is the formula
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Introduction Where does the word SURD come from? Around 820AD the famous Persian Mathematician al-Khwarizmi saw irrational numbers (namely numbers that cannot be written as fractions) as “inaudible numbers”. The LATIN for “inaudible” is “SURDUS” and so from this comes our use of the word SURD. We now use SURD for a number which we
Classwork Series and Exercises {Mathematics- SS2}: Surds Read More »
Harder problems On Trigonometric Graphs Of Cosine and Sine To see how the sine and cosine functions are graphed, use a calculator, a computer, or a set of trigonometry tables to determine the values of the sine and cosine functions for a number of different degree (or radian) measures (see Table 1). Next, plot these
Bearings A directional compass is shown below. It is used to find a direction or bearing. The four main directions of a compass are known as cardinal points. They are north (N), east (E), south (S) and west (W). Sometimes, the half-cardinal points of north-east (NE), north-west (NW), south-east (SE) and south-west (SW) are shown
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Formulae and Substitution A formula is an equation with letters which stands for quantities. For example C = 2πr Is the formula which gives the circumference, c, of a circle of radius r. In science, I = V/R Is the formula which shows the relationship between the current I amps, voltage, V volts, and resistance,
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A lot of students are scared of Maths throughout school, but there are some tips that are easy to follow that will help you improve your marks. Reasons for not doing well in Maths may include not having a strong basic in Maths. There is also an element of fear involved. – The types of
Maths On Your Finger Tips: How to ensure you always get good grades in Maths Read More »
Definition: A ratio is a comparison of two similar quantities obtained by dividing one quantity by the other. Ratios are written with the : symbol. Example: The ratio of 6 to 3 is 6 ÷ 3 = 6/3 = 6 : 3 = 2 Example: The ratio of 3 to 6 is 3 ÷ 6
Classwork Series and Exercises {Mathematics- SS2}: Ratio, Proportion and Rates Read More »
Factors 40 ÷ 8 = 5 and 40 ÷ 5 = 8. We say that 8 and 5 are factors of 40. If we can divide a whole number by another whole number without remainder, the second number is a factor of the first. The numbers 1, 2, 4, 5, 8, 10, 20 and 40
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Find the missing number following the sequence. Tell us your answer in the comment section below.
Quiz of The Day: Think you know your maths? Try this Read More »