Answer:
The value of (-6)2 - 4 • 1 • 13 is negative.
Step-by-step explanation:
To solve a quadratic equation we can solve by factoring, graphing or through the quadratic formula. The formula is as follows:
When the square root value is less than 0, a real solution cannot be found. This means when . For the equation, a=1, b=-6 and c=13.
We substitute and simplify.
This gives us an imaginary solution because the value of (-6)2 - 4 • 1 • 13 is negative.
x^2-bx + 100
A. 20
B. 10
C. 5
D. 50
Answer:
B
Step-by-step explanation:
The directrix will pass through the negative x-axis
The given parameters are:
Vertex = (0,0)
Focus = Positive x-axis
Given that the vertex is at the origin, the directrix would be on the opposite side of the focus
This means that:
The directrix will pass through the negative x-axis i.e. quadrant II and III
Read more about parabola at:
25+25+10+1+1+1= 63¢