Answer:
4.24264069 i
Step-by-step explanation:
Answer:
a.
Step-by-step explanation:
The curve
is not a conic.
Convert to rectangular coordinates.
First multiply through by r.
Substitute
and
We can see clearly that this is not a conic.
is an equation of a cardioid.
is a circle.
is a parabola.
is an ellipse.
Your answer is 78.
Area of a triangle: 1/2 base * height
Area of a rectangle: length x width
Calculate the area of all the faces separately and add them up to solve.
Answer:
150
Step-by-step explanation:
First a diagram which looks like a 12 sided figure where all the sides are equal.
Now draw 2 consecutive radii.
There are 12 such triangles in a 12 sided polygon.
These triangles have an apex angle of 360 / 12 = 30 degrees.
The other two angles making up the triangle are both equal. Therefore x + x + 30 = 180
2x = 150
x = 75
But 75 is 1/2 of the interior angle. There are 2 such angles making up the interior angle 75 + 75 = 150
4w-7k=28
-4w -4w
-7k=-4w + 28
/-7 /-7
k=0.57 + 4