-2/3 / -15
Find the reciprocal of -15 and multiply:
-2/3 * -1/15
Multiply the numerators and denominators together:
2/45
Question:
A = {2, 3, 4, 5}
B = {4, 5, 6, 7, 8}
Two integers will be randomly selected from the sets above, one integer from set A and one integer from set B. What is the probability that the sum of the two integers will equal 9?
A. 0.15
B. 0.20
C. 0.25
D. 0.30
E. 0.33
Answer:
Option B: 0.20 is the probability of the sum of the two integers.
Explanation:
The sample space for selecting 2 numbers is given by
![4\times 5 = 20](https://tex.z-dn.net/?f=4%5Ctimes%205%20%3D%2020)
We need to determine the probability that the sum of two integers will be equal to 9.
Hence, we need to add the two integers from the sets A and B such that their sum will be equal to 9.
Hence, the sets are ![(2,7),(3,6),(4,5),(5,4)](https://tex.z-dn.net/?f=%282%2C7%29%2C%283%2C6%29%2C%284%2C5%29%2C%285%2C4%29)
Thus, the total number of sets whose sum is equal to 9 = 4
The probability that the sum of the two integers will equal 9 is given by
![P=\frac{4}{20}](https://tex.z-dn.net/?f=P%3D%5Cfrac%7B4%7D%7B20%7D)
![P=\frac{1}{5}](https://tex.z-dn.net/?f=P%3D%5Cfrac%7B1%7D%7B5%7D)
![P=0.20](https://tex.z-dn.net/?f=P%3D0.20)
Thus, the probability that the sum of the two integers will equal 9 is 0.20
Hence, Option B is the correct answer.
Answer:
a
Step-by-step explanation:bbbbbbb
Collinear points are two or more points that lie on the same line.
Step-by-step explanation:
step 1: if t=-3 then add it in
3(-3)2+5(-3)+6
Step 2: -solve what's in the ()'s
3(-3)=9 & 5(-3)= -15
-then add them to the equation
(9)2-15+6=?
step 3: -solve like how you did in step 2
(9)2=18 & -15+6=-9
-then add it to the equation
18-9=?
step 4: Finish solving!
it equals 9
So 9 would be your answer.