What number best represents the temperature in anchorage alaska of below 12 degrees

Which expression is equivalent to 4 square root 6 divided by 3 root 2

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.

How can you find the magnitude of a vector, v = < x, y > , where the horizontal change is x and the vertical change is y?