Step by step, we have:
1 • (-1)= -1
Then -1 • 1 = -1 and -1 • (-1)= 1 =》 1 - 1 = 0
The answers is 0
Add all the numbers because they are all negative
-8 + -2= -10
-10 +-5 =-15
-15
Answer:
Where b is the decay rate for this case. Using the condition given we have:



And our model would be given by:

And replacing the value of t=15 we got:

Step-by-step explanation:
For this case since the half life is 6 hours we have the following condition:

Where
is the initial amount
Our model for this case is given by this expression:
Where b is the decay rate for this case. Using the condition given we have:

And solving for b we got:

And solving for b we got:

And our model would be given by:

And replacing the value of t=15 we got:

Answer:
Option b
Step-by-step explanation:
Given that the probability distribution of X, where X is the number of job applications completed by a college senior through the school’s career center.
Expected observed Diff
x p(x) p(x)*1000
0 0.002 2
1 0.011 11 14 -3
2 0.115 115 15 100
3 0.123 123 130 -7
4 0.144 144
5 0.189 189
6 0.238 238
7 0.178 178
1 1000
We find that there is a large difference in 2 job application
Hence option b is right.
Answer:
x² + y² = 1
Step-by-step explanation:
A circle is the locus of a point such that its distance from a fixed point (known as the origin) is always constant. The general equation of a circle is given as:

Where (h, k) is the center of the circle and r is the radius of the circle.
Given that the plane is 1 unit from the point (0,0). Therefore the radius of the circle is 1 unit and the center of the circle is (0, 0). Therefore the equation of the circle is:
