Derek works at a lab with a huge circular particle accelerator. It has a diameter of 6 kilometers. What is the accelerator's radius?

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Find the volume of the described solid. the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x. a) 441b) 147c) 864d) 882

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i