The table below shows immigration to the united states from three countries in three different years. a person is randomly selected. find the probability that the person is from cuba, given that the person immigrated in 1990. round your answer to the nearest hundredth.

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Write the expression as a single natural logarithm. 2 in a - 4 in y

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /