A manufacturer is doing a quality control check of the laptops it produces. Out of a random sample of 145 laptops taken off the production line, 6 are defective. Which of these statements are true? choose all that are correct

What does a triple-beam balance require the user to do? add the numbers from the three sliders to determine the mass of an object multiply the numbers from the three sliders to determine the mass of an object add the numbers from the three sliders to determine the volume of an object multiply the numbers from the three sliders to determine the volume of an object