To create a similar line, you have to make a line of any length, open up the compass to the length of the original line, then draw an arc with that length on the created line. Choice 2 follows these set of steps.
:)
Answer:
7
Step-by-step explanation:
im not sure how to solve that sorry
The equation of the sphere centered at 0, and radius 4 is:

,
note that this equation describes exactly the points of the surface of the square. That is, this is an EMPTY sphere.
The solid sphere, that is the points on the surface and all points in the inside, are given by :

since we want the left part of the solid part, picture 2, we add the condition x<0,
thus "the solid left (x < 0 is left) hemisphere of a sphere of radius 4 centered at the origin" is given by the system of inequalities:
