Atriangular pyramid is cut by a plane. in which case is the cross section a quadrilateral?

a: when the plane is perpendicular to the base and passes through the apex

b: when the plane is parallel to the base of the pyramid

c: when the plane intersects the base and two lateral faces of the pyramid

d: when the plane intersects the base and all three lateral faces of the pyramid

Which function has an inverse function? a. f(x)= |x+3|/5 b. f(x)= x^5-3 c. f(x)= x^4/7+27 d. f(x)= 1/x²

Determine if the equation defines y as a function of x: 2xy = 1. yes o no

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?