Answer: x= -(1/2)
Step-by-step explanation:
(x+5 +3) / x+3 = 3
Multiply both sides by (x+3)
(x+8)= 3(x+3)
x+8 = 3x+9
-2x = 1
x= -1/2
CHECK:
-1/2 +8 = 15/2 -1/2+3 =5/2
15/2 : 5/2 = 15/2*(2/5) = 30/10 = 3
The scale factor would be 1:1 (1) for this question
Answer:
Step-by-step explanation:
Given:
Solution:
We can solve for 
to make it less complicated.
Now we can solve for 
.
If they're integers, that means they can't be fractions (such as 15/2 and 2).
So the only couples of integers that, when multiplied, result in 15 are:
1 and 15
5 and 3.
(there are no other possibilities as both 5 and 3 are not divisible further).
The smaller of the two sums (15+1; 5+3) is 5+3=8.
The least possible sum of a and b is 8.
nCr(20, 2) = 190 ways of selecting 2 from 20
nCr(10, 1) = 10 ways of selecting 1 from 10
To find the over all probability of winning,
Calculate the Harmonic Mean (19) and divide by 2
Equivalent to
1/ (1//190 + 1/10) =9.5
So the probability is 1/9.5 = 2/19.
