Search over 10,000 free study notes

5x+y=215x-15y=45
16y = -24 y = -1.5
5x -1.5 =215x=22.5x=4.5

little holes in the leaves of plants. this allows air to get in to the leaf so the plant can use it to make all the things it needs to live! the problem is, these little stomata can let water leave as wel...

Control of body temperature is called thermoregulation. One mechanism for thermoregulation is the control of blood vessels in the skin to either increase or decrease heat loss.If body temperature is too h...

Price list:Pencils - 10p Rulers - 30pWe know Gemma would like to buy an equal number of pencils and rulers. Therefore we can call this a 1:1 ratio. Using the price list we can see that 1 ruler and 1 penci...

Initially solve for the longer spans through simultaneous equations;5x-12y+16=5y-4x+20Simplify equation;9x-17y-4=0Repeat for the shorter spans;2x-4y+4=3x-2y-12Simplify equation;x+2y-16=0Make x the subject...