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Solution,

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Good luck on your assignment..

Area = 30 cm²

Step-by-step explanation:

Finding DE first:

ΔCDB is similar to ΔCEA

So, To find DE, We'll take the proportion of their sides:

=>

Cross Multiplying

=> 6CE = 72

Dividing both sides by 6

=> CE = 12 cm

Now

DE = CE - CD

DE = 12-8

DE = 4 cm

Now, Finding the Area of trapezium:

=> Area =

Where a = 6, b = 9 and Height = 4

=> Area =

=> Area = 2(15)

=> Area = 30 cm²

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

answer: do we write it

step-by-step explanation: