Express the series using sigma notation. 6 + 9 + 12 + 15.

21,000 round to the nearest thousand

The solution to - 5m = - 20 is negative. True or false

Determine whether the description corresponds to an observational study or an experiment. Research is conducted to determine if there is a relation between Parkinson's disease and childhood head trauma.

F (x) = 1/2*-2, what is f (14)

What is the sum of 3√7 + 5 and 2√7 + 8?

Which is the best description of the graph of the function f (x) = 60 () x? A) The graph has an initial value of 20, and each successive term is determined by subtracting.

What is 10% of 120? It's hard idk.?

What is the measure of an angle that turns through 1/3 of a circle

A tea set was bought for $ 328, if a discount of 12% is offered on the price. Find the price of the tea set.

Two numbers, 3 and a, have a geometric mean of 9. Find the value of a.