Answer: Star 1> Star 3 >Star 2> Star 4
Step-by-step explanation:
Since according to the given table ,
Mass of star 1 = 9 unit
Mass of star 2 = 0.9 unit
Mass of star 3 = 5 unit
Mass of star 4 = 0.3 unit.
Since mass is directly proportional to the time. ( E= m c^2)
Here, 9 unit > 5 unit > 0.9 unit > 0.3 unit ( order of masses)
Therefore sequence of the stars according to their increasing order of their time.
Star 1> Star 3 >Star 2> Star 4
The image of the regular hexagon coincides with the pre-image 6 times during rotation.
A regular hexagon is a polygon that has six equal sides and six equal angles.
In a single rotation which is usually the rotation of an object at 360°, the number of times in which the regular hexagon coincides with its pre-image is 6 times, this is because it has 6 equal sides and 6 equal angles.
Learn more about regular polygon here:
brainly.com/question/1592456
The standard equation for a parabola that opens upward parallel to the y-axis is x2=4ay, where a = distance from the vertex to focus. Vertex is at origin(0,0)
4a=2
a=2/4
a=1/2 or 0.5
the coordinate of the focus is (0, 1/2)
the equation of the directrix is y=-1/2
Simple just do normal simple algebra:)