4. is A 15
5. is C 12
6. is B 4, 8, 12, 16
hope this helps :)
7/100
3/10
21/125
3/ 2500
7/50
I simplified them for you
7a-4=3a+27+4a
7a-4=7a+27
you sure you type the right question?
Answer:
A)0.5
Step-by-step explanation:
We can see in the graph , that it is bell-shaped along x =2. A bell-shaped graph along one value is called symmetric graph and it represents a normal distribution.
Since, the give graph is symmetric around x=2, so the mean of the data is 2.
The point immediate left to the mean represents x-σ
so,
2 - σ = 1.5
So,
σ = 0.5
The sigma represents standard deviation.
Hence, Option A is correct ..
