The number of cows a farmer has on his farm over several years can be modeled by an arithmetic sequence. During the 2nd, 5th, and 7th years, he has 30, 39, and 45 cows, respectively. How many cows did the farmer have in his first year on the farm?

Use the graph of the sine function y=2sinθ shown below

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −