What is x when x/4 = 2/5

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

answer: translate the circles so they share a common center point and dilate circle y by a scale factor of 3.

1. perpendicular

2. parallel

3. perpendicular