Answer:
The answer is B.180°.
Step-by-step explanation:
The figure is rotationally symmetric is after a rotation of a given angle, it still look the same.
In this case of a rectangle, the only way to rotate it so that is look the same, is by rotating it by multiple of 180°, so that the up and down sides flip over, as well as the right and left sides.
Therefore, the only option that applies is B.180°
1 grain = 103g
2kg = 2000g
grains = 2000g/103g = 19.417
Answer:
About 19.417 grains
So to do that, find the point of S then transform
in (x,y) form
we see that the point 'S' is 1 unit to the right and 2 units up therefor
the point is (1,2)
so we jsut apply the thingy translation to is
x=1
y=2
x+2=1+2=3
y-1=2-1=1
the new point is (3,1)
Half hour= 30 minutes
30/180=1/6= 0.16666666~16.7%
