Step-by-step explanation:
f(x) = x√(x+8)
When f(x) = 0,
0 = x√(x+8)
x = 0, x + 8 = 0
x = -8
f'(x) = (1)√(x+8) + x • ½(x+8)^(-½) = 0
0 = √(x+8) + 1/[2√(x+8)] (x)
-2(x+8) = x
-2x - 16 = x
x = -16/3
(-8 < -16/3 < 0)
Therefore, x-intercept of f'(x) = 0 is somewhere between the two x-intercepts, ranging from -8 to 0.
Answer:
Buy 4 of Tetra fish and 4 Cichlids
Step-by-step explanation:
First you can figure out that if u buy 8 of the tetras, you will have 60 left. Then finding the difference of price between the fishes, you get 14. Then dividing 14 by 60, you get 4.28. This means you can replace 4 of your Tetras with Cichlids. Therefore you will spend 96, having 4 left
Answer:
x + 1
Step-by-step explanation:
3x -(2x +4)+5
Open bracket first by multiplying bracket by -
3x - (2x + 4) + 5
3x (- × 2x) -(+4) + 5
= 3x - 2x - 4 + 5
= x - 4 + 5
= x + 5 - 4
= x + 1
I hope this was helpful, please rate as brainliest