I think your answer might be 19.5
The answer to the question is 1-5
Answer:
The sum of the roots is 0.5
Step-by-step explanation:
<u><em>The correct question is</em></u>
What is the sum of the roots of 20x^2-10x-30
we know that
In a quadratic equation of the form
The sum of the roots is equal to
in this problem we have
so

substitute
<u><em>Verify</em></u>
Find the roots of the quadratic equation
The formula to solve a quadratic equation is equal to


substitute





The roots are x=-1 and x=1.5
The sum of the roots are
----> is ok
First multiply 76 by 80/100
(76 x 80 )/100 = 60.8
Now because the price has to be reduced...
76 - 60.8 = $15.2
Hope this will help.
It is:
40+1+0.3+0.02=41.32