Answer:
x squared plus two times x minus one = zero.
Step-by-step explanation:
(This is a Quadratic equation in the variable x).
Answer:
Yes, I believe the answer is C because that is the only one that sounds reasonable.
If it were any of the other answers than it would either be intersecting or on the exact line and it is supposed to be perpendicular mean never touching.
Answer:
A cardioid
Step-by-step explanation:
A cardioid is a curve in the shape of a heart traced by a point on the circumference of a circle as it rolls around a fixed circle of the same radius.
The equation of vertical cardioid is
± 
Given the polar curve is
4 
This is an equation of vertical cardioid.
So, it represents a cardioid.
Hey there !
7C5 = 7 x 6 x 5 x4x3/5 x 4 x 3 x2x1 = 7
Hence option d is correct z