23-08-2017
Mathematics

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#34. If AD= 12 and AC= 4y- 36, find the value of y. Then find AC and D.C.

34 If AD 12 and AC 4y 36 find the value of y Then find AC and DC class=

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ivycoveredwalls ivycoveredwalls

23-08-2017

The marks on the diagram show that D is the midpoint of AC. So the length of AC is 24. It is also 4y - 36, so

4y - 36 = 24
4y = 60
y = 15

Can you finish it?

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