Question

B) Given equation is, 5x² - 3x -4 =0

On comparing with ax² +bx + c= 0 we get :
C) In fig .AB is 80m tall light house, the two ships are at C and D.

I had given the main answer in short now u do it ...
It's in your books mate find out !!
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Answer 1

Answer : The First Answer is in the picture above and second question is incorrect ..

Explanation:

Hope it works out !!