4. If the determinant delta of a quadratic equation is positive, the equation has two real roots. If the determinant is negative, it has two imaginary roots. In this case, delta=b^2-4ac=(-1)^2-4*1*4=-15. Therefore, this equation has two imaginary roots.
To calculate the distance between two points, we can use a formula that is a variation Pythagorean Theorem. Look:

"d" represents the distance and coordinates are expressed as follows: (x, y)
Let's go to the calculations.

The answer is 6.7 uc.
each will have to pay 425 dollars per week
Answer:
i do not know srry
Step-by-step explanation:
i think u should try and solve it with a better teacher
The answer is 4500 because 3 is less than 5 so we dont have to add one to five