Estimate the difference between 156 and 31 by first rounding each number to the nearest ten. a.190 b.180 c.120 d.130

Which of the following is a justification used while proving the similarity of triangles lom and mon

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

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.