12:12 which is the same as 1:1
Answers
Explanation:
Given f(x+1)=2x2−3x+1 ……..(1)
Now, to find f(x+2) let us
put (x+1) in place of 'x' in (1)
or, f(x+2)=2(x+1)2−3(x+1)+1
=2(x2+2x+1)−3(x+1)+1
=(2x2+x).
Explanation:
Salary (xi) workers (fi) (xi fi)
3000 16 48,000
4000 12 48,000
5000 10 50,000
6000 8 48,000
7000 6 42,000
8000 4 32,000
9000 3 27,000
10,000 1 10,000
∑fi=60 ∑fixi=305000
Mean =
∑fi
∑fixi
=
60
305000
=5083.33
Explanation:
Salary (xi) workers (fi) (xi fi)
3000 16 48,000
4000 12 48,000
5000 10 50,000
6000 8 48,000
7000 6 42,000
8000 4 32,000
9000 3 27,000
10,000 1 10,000
∑fi=60 ∑fixi=305000
Mean =
∑fi
∑fixi
=
60
305000
=5083.33