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.
Answer: The 1st, 2nd, and 5th one
Step-by-step explanation:
just did it
Answer:
4x - 12
Step-by-step explanation:
8-4(-x+5)
Distribute
8 - 4*-x -4 * 5
8 +4x - 20
Combine like terms
4x - 12
Answer:
Markup amount = sellingprice - costprice
=12.50 - 5 = 7.5 is markup
Answer:
3 hours and 25 mins
Step-by-step explanation: