Answer:
D) Carol scored the highest in math.
Step-by-step explanation:
Look at the chart and check each question.
A) history is her favorite subject - Wrong (This is about Marks Obtained, Not Favorite Subjects!)
B) carol scored more in physics than English - Wrong (In Physics, the score is 55 while in English, it is 65!)
C) Carol got the least marks in history - Wrong (History is at 48 while Biology is at 35!)
D) Carol scored the highest in math - Correct (The highest score is 80 which is Math!)
The correct answer is c because it repeats itself
Answer:
60 watts i believe double check my work
Step-by-step explanation:
Answer:
The discriminant of the quadratic equation is -7.
Step-by-step explanation:
We are given the following quadratic equation in the question:
![x^2+x+2 = 0](https://tex.z-dn.net/?f=x%5E2%2Bx%2B2%20%3D%200)
Comparing to general quadratic equation:
![ax^2+bx+c = 0\\a = 1\\b = 1\\c = 2](https://tex.z-dn.net/?f=ax%5E2%2Bbx%2Bc%20%3D%200%5C%5Ca%20%3D%201%5C%5Cb%20%3D%201%5C%5Cc%20%3D%202)
We have to find the discriminant of the quadratic equation.
Formula:
![d = b^2-4ac](https://tex.z-dn.net/?f=d%20%3D%20b%5E2-4ac)
Putting values, we get,
![d = (1)^2 - 4(1)(2) = 1 - 8 = -7](https://tex.z-dn.net/?f=d%20%3D%20%281%29%5E2%20-%204%281%29%282%29%20%3D%201%20-%208%20%3D%20-7)
Thus, the discriminant of the quadratic equation is -7.