book Maths Puzzle Numerical Ability

Solve. The land area of China is 3.692 x 106 square miles, and that of India is 1.18 x 106 square miles. What is the total land area of China and India expressed in standard notation?

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book Other Question

For the functions f(x)=4x-1 and g(x)=3-5x^2 find the compostion g of f(x). Explain what the value of the discriminant means to the graph of {{{ y = ax^2 + bx + c }}}. Hint: Chose values of a, b and c to create a particular discriminant. Then, graph the c