Multiplying decimal *= times symbol. 6.4 × 0.8 = ? 0.89 × 0.65 =? 1.63 × 0.93 =? pleas & in advance!

Suppose that in 2008 , 840,800 citizens died of a certain disease assuming the population of teh country is 399 miliion, what is the mortality rate in units of deaths per 100,000 people?

Square a has a side length of (2x-7) and square b has a side length of (-4x+18). how much bigger is the perimeter of square b than square a?and show all work! you so

What is the answer to question 11? will give extra points! include a explanation (reasonable) for you : )