Let v⃗ 1=⎡⎣⎢0−33⎤⎦⎥,v⃗ 2=⎡⎣⎢220⎤⎦⎥,v⃗ 3=⎡⎣⎢20−2⎤⎦⎥ be eigenvectors of the matrix A which correspond to the eigenvalues λ1=−3, λ2=0, and λ3=1, respectively, and let x⃗ =⎡⎣⎢−6−57⎤⎦⎥. Express x⃗ as a linear combination of v⃗ 1, v⃗ 2, and v⃗ 3, and find Ax⃗ .

What is the value of x in the diagram below?

What is the first step of an indirect proof of a number that is divisible by two

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?