Explain step by step how to arrive at a single rational number to represent the following expression. show both a written explanation and th related math work for each step

Determine whether the samples are independent or dependent. upper a data set includes the morning and evening temperature for the lasta data set includes the morning and evening temperature for the last 90 days.90 days.

What is the measure of sty in oo below? 130 310 230 50

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?