X is greater than or equal to -200
Answer:
138.6
Step-by-step explanation:
You don't have a question in there but I can tell you that the quadratic formula that is shown is not quite correct.
<span>x = -b ± √b2 - 4ac 2a
For one thing, the first 3 terms should ALL be divided by 2a
The square root symbol should be extended from b^2 through 4ac
The division symbol is missing.
So the quadratic formula SHOULD read:
x = [-b +- sq root (b^2 - 4ac) ] / 2a
Also I have attached a graphic of the quadratic formula.
</span>
The third one is true
good luck
88/100 can be simplified. Divide both sides by 4 which turns it into 22/25.
Grace got 22/25 questions correct.