Answer: The correct option is (A). When the radicand is negative
Step-by-step explanation: We are given to select the correct option by which we can tell that a quadratic equation has no real solutions.
We know that for the quadratic equation
the radicand is given by
Based on the radicand "D", we have the following rules:
(i) If D > 0 (positive), then the two solutions are real and unequal.
(ii) If D = 0, then the two solutions are equal.
(iii) If D< 0 (negative), then the two solutions are complex (not real).
Thus, when the radicand is negative, then the quadratic equation has no real solutions.
Option (A) is correct.
System of equation consists of two or more equations with unknow variables. A possible step used in eliminating the y-term is (y + z 6) *5
<h3>System of equations</h3>
System of equation consists of two or more equatons with unknow variables.
Given the system of equations
y + z = 6
5y + 9z =1
In order to eliminate the variable "y", we <em>will multiply equation 1 by 5 and subtract from equation 2;</em>
5y + 5z = 30
5y + 9z = 1
Subtract
5z - 9z = 30 - 1
-4z =29
This leaves only the variable "z" eliminating variable. "y"
Learn more on system of equation here: brainly.com/question/14323743
What are you trying to find
The cold war came to an end
Answer:
There are 4 dots in categories 0 and 1; 9 dots in categories 2 and 3; and 2 dots in categories 4 and 5. The histogram with bar lengths 4, 9, and 2 is the appropriate choice.
