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Solve the Simultaneous equation: 6x+3y=13, 14x-9y=9?

First we need to eliminate one of the Variables, to have an equation dependant on one variable. The coefficient for y in equation two is a third of the coefficient of the y in the second equation. Therefore,...
MM
Answered by Matthew M. • Maths tutor
3390 Views

How to find the longest side of a right-angled triangle if we are given the two other sides?

We can find the longest side of a right angled triangle (also called the hypotenuse) by using Pythagoras' Theorem and considering the lengths of the two other sides given to us. Pythagoras' Theorem is writte...
DC
Answered by Denzel C. • Maths tutor
19823 Views

Differentiate the following: y=sin(x^2+2)

dy/dx = 2xcos(x 2 +2)
MB
Answered by Matthew B. • Maths tutor
3887 Views

make x the subject of 5(x-3) = y(4-3x)

step 1 ; expand the brackets5x - 15 = 4y - 3xystep 2 ; group together x values on one side5x + 3xy = 4y + 15step 3 ; single out xx (5+3y) = 4y +15step 4 ; make x the subjectx = (4y + 15) / (5+3y)
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Answered by Sofia A. • Maths tutor
5330 Views

Write down the length of side "a"

Using Pythagoras' theorem: a 2 = b 2 + c 2 You can use the length of the other two sides to calculate a.
RK
Answered by Rhys K. • Maths tutor
3238 Views