chapter 4

Tanya was reading a novel, which had 10 chapters. She spent 1 hour(s) reading the first chapter and took the same amount of time to read all the other chapters of the novel. She completed reading the novel in 19 hours. Solve the equation 1 + 9 h = 19, to find h , the n..

Find the equation of the curve that passes through the point (3,- 4) such that the slope of the tangent at the point (x, y) on it equals ..

Question: Solve the following equation: Answer: By cross-multiplication, we get (8x-3) (x-2) = (4x+1) (2x+5) 8x(x-2)-3(x-2) = 4x(2x+5)+1(2x+5) ..

Take about 2 - 4 g of cane sugar, and add about 5 ml of concentrated sulphuric acid. You will notice that the white crystals of sugar gradually change to yellowish brown and then to brown, and finally to black color. Add some water to wash out the unused sugar or excess of sulphuric acid..