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.
That mean something is suspicious because they are hiding something from u
Iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii dddddddddddddddoooooooooooooooonnnnnnnnnnnnnnn''''''''''''''ttttttttttttttttttttttttttttttttt kkkkkkkkkkkkkkkkkkkkkkkkkknnnnnnnnnnnnnnnnnnnnnnooooooooooooooowwwwwwwwwwwwwwwwwwwwwww
D.68
A squared plus b squared equals c squared and so add the two lengths given and square them which gives you the hypotenuse squared so then find the square root of your result which is 68
See, pls, the offered decision:
1. this ratio has another form: 2x/3x/4x;
2. the difference between the largest and the smallest is 4x-2x=10.
Then x=5, and the sequence of numbers is 10/15/20, where 15 is the middle number.
Answer: 15.
