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A scientist is examining how the amount a person exercises affects his or her blood pressure.  She is comparing groups of people of the same age and gender.  Which one of the following variables is the dependent variable in her experiment?

Which of these describes the relationship between and independent and dependent variable?

How is a best-fit line different from an ordinary line graph?

Convert 630 cm into mm.

Choose the sentence that best combines the following sentences. “American Idiot” sold over 10 millionCD’s.It was recorded by Green Day.“American Idiot” was voted Album of the Year

What is the best way to combine the following sentences: Carla, and Bob weren’t paying attention to the teacher.They couldn’t do their homework.

Derek was presenting to a group of his colleagues about the importance of avoiding sexual misconduct.  At the start of his speech he told a funny joke that got the listener’s attention before explaining to them why they needed to avoid such behavior.  The purpose of his presentation was meant to _____. 

Mr. Johnson has been an FBI agent for 25 years.  He was asked to participate as a witness in a trial about sex trafficking.  His testimony is considered a(n) _____ testimony.

Calculate the heart rate and determine the rhythm. 

The rigid beam in the figure below consists of a pin support at A and a roller support at B. There is a uniform load on the first 2 m of the beam and a trapezoidal load on the right 3m of the beam, as shown.  In your supporting calculations, draw the free body diagram and determine the reactions at A and B.  Enter the vertical reaction at B in the box below.