39. each term is ten more than the term before it :)
Answer:
(-5, 50) and (-1/3, -0.815)
Step-by-step explanation:
The equation is;
y = x³ + 8x² + 5x
Now the turning point will occur at where dy/dx = 0.
Thus;
dy/dx = 3x² + 16x + 5
At dy/dx = 0, we have;
3x² + 16x + 5 = 0
From quadratic formula, we can get;
x = -5 or -⅓
Thus, let's find y at this points.
y = -5³ + 8(-5)² + 5(-5)
y = -125 + 200 - 25
y = 50
Also,at x = -⅓, we have;.
y = (-⅓)³ + 8(-⅓)² + 5(-⅓)
y = -1/27 + 8/9 - 5/3
y = -0.815
Thus,the coordinates of the turning points are;
(-5, 50) and (-1/3, -0.815)
Answer:16 signs
Step-by-step explanation:
you have 11 feet of wood and for each sign you need 2/3 so you would do 11 divided by 2/3 and yu get 16.5 but you can't have 16.5 signs and you don't have enough for 17 signs so it would be 16 signs
Answer:
Step-by-step explanation:
height=√(13²-9²)=√(13-9)(13+9)=√4(22)=2√11
area=1/2×9×2√11=9√11≈29.85 ft≈29.9 ft
