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What is BODMAS?

BODMAS is an acronym that tells you what order to do things in a maths equation. It stands for brackets, order (e.g. 2 2 ), division/multiplication and addition/subtraction.
JK
Answered by Jessica K. • Maths tutor
4168 Views

How to use Semi-Colons correclty.

Semi-Colons are a piece of punctuation which many people do not know how to use properly. Used correctly, semi-colons can show an examiner that you are capable of using advanced punctuation and can help you ...
MH
3119 Views

What fractions are equivalent to 1/4?

3/12, 2/8. To identify fractions which are equivalent to one another, you need to identify the common multiple of both the denominator and numerator and then simplify. When a fraction is equivalent to one an...
KN
Answered by Konstantin N. • Maths tutor
4628 Views

Solve algebraically: 6a + b = 16 ..... 5a - 2b = 19

first equation: 6a + b = 16 second equation: 5a - 2b = 19 from 2 times first equation + second equation 17a = 51 meaning a = 3 .... from the first equation 6(3) + b = 16 therefore b = - 2
BC
Answered by Benjamin C. • Maths tutor
3568 Views

A speaker emits a sound wave through a metallic block, with a speed of 0.42 km/s, and a frequency of 16kHz. Calculate the wavelength to 3.s.f. Describe the characteristics of a longitudinal wave.

Firstly the values should be converted into more comfortable units. 0.42km/s = 420m/s, and 16kHz = 16,000Hz. Next, use the equation wavelength = speed/frequency This gives wavelength = 420m/s over 16,000/s =...
JB
Answered by Joseph B. • Physics tutor
4588 Views