Hi guys! I need some help with this question. In one or two sentences, make a hypothesis about the movement of the galaxy and explain at least one way to test the hypothesis. Thanks! (I'm on a big test)

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47