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Maths
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How do I multiply 2 matrices?

To multiply two matrices we need to name them A and B.

If for example we have 2 2X2 square matrices we know this will create a 3rd 2x2 martix

For this example we will use :<...

CR
Answered by Ciara R. • Maths tutor
15401 Views

How do i solve a system of 2 equations?

This problem is one that can be confusing if not tackled orderly. Let us have an example of a system of 2 equation:

3x + 5y = 13

4x + 7y = 18

II
Answered by Ioan I. • Maths tutor
4988 Views

Bag A contains £7.20 in 20p coins. Bag B contains only 5p coins. The number of coins in bag B is three-quarters of the number of coins in bag A. How much money is in bag B?

First you want to find out how many coins there are in bag A. So how many 20p coins do you need to make £7.20? This is the same as 720p. 720 divided by 20 is the same as 72 divided by 2 which is 36. So...

AE
Answered by Anezka E. • Maths tutor
12406 Views

Do y=3x^2+5x+12 and y=3x-8 intercept with each other? If yes, at which point(s)?

This is like solving 2 simultaneous equations. Both equations are in a form of y=ax^2+bx+c. Equate both equations together and you got:
3x2+5x+12 = 3x-8

Put both polynomi...

JH
Answered by Justin H. • Maths tutor
4832 Views

How can I remember the difference between differentiation and integration?

A neat trick to remember what we do to the powers when integrating and differentiating is that we INcrease the power when we INtegrate, and D...

LW
Answered by Laura W. • Maths tutor
17993 Views

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