In the diagram shown,
ABCE is a trapezium,
AD is parallel to BC,
DE = 4 cm,
Area of ABCE = 60 cm?,
Area of ABCD = 48 cm?.
g cm
Work out the values of fand g.
You must show all your working.

Exponential function

32.10 is the correct answer

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.

A=l×wa=(8x+6) (13x+11)a=104x➋+166x+66