50 POINTS Sam calculated (2.6 × 10-2)(1.5 × 10-4) in his calculator. Which of the following results could be displayed on the calculator screen? Select ALL that apply.

3,900,000
0.0000039
3.9E6
3.9 × 10 -6
3.9E-6

Which statement about the relative areas of ? abc and ? xyz is true? the area of ? abc > the area of ? xyz the area of ? abc < the area of ? xyz the area of ? abc = the area of ? xyz more information is needed to compare.

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

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.