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How do you solve the following simultaneous equations? 5x+6y=3 2x-3y=12

5x+6y=3 2x-3y=12 6y=3-5x 2x=12+3y 3y=2x-12 Therefore, 6y=2(2x-12)=4x-24 4x-24=3-5x 9x=27 x=3
SI
Answered by Sathana I. • Maths tutor
5192 Views

I don't understand chain rule for differentiation especially when combined with more complex functions.

The chain rule is a method that allows you to differentiate a function of a function, which can be of the form y = f[g(x)]. That is, g is a function of x and f is a function of g, which in turn is a function...
AS
Answered by Adamos S. • Maths tutor
8473 Views

Given 924*438 = 404712, what is 9.24*43.8

Given 924 x 438 = 404712, we must consider the changes made to THIS question that leads to 9.24 x 43.8 924 => 9.24: we divide 924 by 100 to get 9.24 438 => 43.8: we divide 438 by 10 to get 43.8. Theref...
KS
Answered by Kumar S. • Maths tutor
3447 Views

Find the values of y such that log2(11y-3)-log2(3)-2log2(​y) = 1

Find the values of y such that log 2 (11y-3)-log 2 3-2log 2 y = 1 Power law: 2log 2 y = log 2 y 2 Product law: log 2 (11y-3) - log 2 3 - log 2 y2 = log 2 (11y-3) - log 2 (3y 2 ) Quotient law: log 2 (11y-3) -...
JP
Answered by Joe P. • Maths tutor
17672 Views

How do you differentiate this

In differentaition, it is all about multiplying and taking away. Look at the first integer and the number that it is in the power off. You have to simply times the integer with the power of number and then d...
MD
Answered by Meghna D. • Maths tutor
3592 Views