Answer:
f(x) = x⁴ - 8x³ + 25x² - 72x + 144
Step-by-step explanation:
f(x) = (x-4)²(x+3i)(x-3i)
= (x²-8x+16)(x²+9)
= x⁴ - 8x³ + 25x² - 72x + 144
Answer:
C. X = 4
Step-by-step explanation:
15ml to become more concentrated divide the amount
Step-by-step explanation:
Answer:
20%
Step-by-step explanation:
To find this, set up a ratio of percent over 100 equals is over of. Is being 32 and of being 160.
= 
Then, cross multiply. Multiply 32 by 100 before dividing by 160 in order to get the final answer of 20%.
32 x 100 = 3200
3200/160 = 20
Hope this helps!
Answer:
B: y=cos(x) - 2
Step-by-step explanation:
You can use a graphing calc, write out a table, or use your knowledge. In this case, I will use my knowledge.
You can automatically rule out any answers with <em>sine </em>because the sin graph will never start at y=1 when x=0 (remember the unit circle and parent graphs), so rule out A. Since the graph shown is a transformation of only vertical from <em>y=cos(x)</em>, you can rule out C as well. Now you are left with B and D. B is the correct answer because if you chose D, the value for when x=0 would be y=0, while the value for x=0 for B would be y=-1, which is what you want.
