Solve for $x$, where $x > 0$ and $0 = -21x^2 - 11x + 40.$ Express your answer as a simplified common fraction.

Step-by-step explanation:

Hello, please consider the following.

The solutions are, for a positive discriminant:

Here, we have a = -21, b = -11, c = 40, so it gives:

So, we have two solutions:

We only want x > 0 so the solution is

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

b

step-by-step explanation:

if a was wrong then it has to be b it cant be c either because not all the y intercepts are the same!

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it reflected because of the glass maube

step-by-step explanation: