Answer:
Step-by-step explanation:
Rate=amountdone/time
convert everybody to minutes
1 hour=60 minutes
45 mins=45 mins
1.5 hour=1.5 times 60=90mins
1hour and 10mins=60+10=70mins
laurenrate= 270packets/45mins=6ppm (packets per minute)
hannahrate=450packets/90mins=5ppm
jakobrate=280packets/70mins4ppm
whoever worked the fastest, has the highest ppm
lauren is winner
answer is A. lauren
X^2+x+1=1
x^2+x=0
x (x+1)=0
1)
x=0
2)
x+1=0
x=-1
Remark
The electron has a mass that is roughly 1/1800 the size of either the proton or the electron. In comparison the electron's mass is very small comparred to the other 2.
Solution
A is totally wrong. A part of an atom can't weight the same as the atom.
B is totally wrong as well. See the remark above.
D is wrong. See the remark above
C is the answer. It's mass is quite small compared to the other 2.
Hello there!
The answer is C.
I will explain to you how I came to this answer.
•First of all, I counted the turning points. There are two, so that means this polynomial function has THREE roots. (# of turning points+1=number of roots.)
•Next, look to see how many times the function crosses the x-axis. This is the number of REAL solutions. In this case, there is one point at which the f(x) is crossing the x-axis so there is one real solution.
•Since there is one real solution there has to be 2 imaginary roots. (Total # of solutions-real solutions=imaginary solutions)
NOTE: the turning points are where the increasing intervals change to decreasing and the decreasing change to increasing. The first derivative at these points is 0.
I hope this helps!
Best wishes~
-HuronGirl