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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
5247 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
3496 Views

The line l is a tangent to the circle x^2 + y^2 = 40 at the point A. A is the point (2, 6). The line l crosses the x-axis at the point P. Work out the area of triangle OAP.

This will involve drawing a diagram to aid your answer. Where O is the origin, A is a point on the circle and P is a point on the x-axis. OA is the radius of the circle. Line l crosses through point A and me...
TD
Answered by Tutor51285 D. • Maths tutor
34331 Views

A ladder 5.5m long is leaning against a wall. the foot of the ladder is 1.7m away from the wall. how far up the wall does the ladder reach?

This is a classic GCSE Pythagoras' Theorem question. The first thing we are going to do is draw a diagram. Once we sketch out a diagram, we can see that the ladder makes a triangle shape with the wall. If we...
AN
Answered by Annie N. • Maths tutor
7782 Views

How do I work out the length of sides on a right-angle triangle?

Over 2000 Pythagoras discovered that when a triangle has a right angle (90 degrees), and squares are made for each of the three sides, then the biggest square has the exact same area as the two other squares...
AK
Answered by Amrita K. • Maths tutor
4953 Views