If the element was lead-210 with a half life of about 22 years, how old would this sample in the previous question be?

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

True or false? the sum of the differences (% - 7) is never zero for any distribution consisting of n observations.

What is the range of the inverse of the given function f(x)=√x-2