Show that $$\(6 \frac{3}{4} \div 2 \frac{4}{7}=2 \frac{5}{8}\)$$

If the circumference of a circle is increased by , by what per cent is the area of the circle increased? Note: This is how to...

A firm makes a certain type of battery－powered toy．The battery life is denoted by hours and the population mean of is suppose...