In 2012 the population of India was 1.273 billion while the population of the US was 314.4 million. Calculate how many times larger the population of the India is compared to the US.

Me n o w. i need t h i s. 10 points

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

See attachment below and find the equivalent of tan(∠qsr)