Try this option:
1. if 8*x²+b*x+3=8*x²+p*x+q*x+3, then ⇒ b=p+q.
2. p*q = max_value (b²/2), if p=q=0.5*b, and p*q→-oo, if p>0 and q<0 or p>0 q<0.
3. example:
given 8x²+10x+3, the student rewrites it as a) 8x²+5x+5x+3 (5*5=25-max value); b) 8x²+0.01x+9.99x+3 (9.99*0.01=0.0999→0); c) 8x²-20x+30x+3 (p*q=-600).
answer: (-oo;0.5b²)
x = normal water level
x - 12 - 13 = x - 25
so it is 25 feet below the normal water level
Answer:
10 or 5
Step-by-step explanation:
I think 10
Answer:
23009040=2.3009040*10^(7)
<span>So we wan't to know from which number can we take 30% and get 6. Well, lets turn that into an equation. Lets say that x is the number we are looking for. So, 30% of x is equal 6 or mathematically: 30% * x = 6. Now: (30/100)*x=6 and when we multiply both sides with 100 and divide both sides with 30 we get: x=(6*100)/30 and that is equal to: x=20. So 30% out of 20 is 6. </span>