the length of the rectangle is 8 metres longer then the width. if the perimeter of the rectangle is 402 metres what are the dimensions of the rectangle
1.Solve the equation 9x^4 -18x^3 -31x^2 + 8x +12=0 by Ferrari"s method.
2.Use De Moivre"s theorem to obtain the 6^th roots of i5-1.Also show that them in an Argand diagram.
Suppose there are initially 2,200 bacteria in a culture and the number of bacteria triple each hour, the number of bacteria after t hours can be found using the formula y = 2200(3)t. How long will it take the culture to grow to 60,000 bacteria?