Answer:
The element you add is 
Step-by-step explanation:
The element you add is
Remember that
So, in order to complete the square you add 
But when you multiply times 
you get
Answer:
I think it’s 48 cm
Step-by-step explanation:
Area is length x width so 8 x 12 is 96 and since it is twice the slice of the smaller triangle, 96 divided by 2 is 48
The difference of a number and seven is x - 7. So twice that, would be:
2(x - 7)
Answer:..
Step-by-step explanation:
Answer: (A) randomly selected elements within each of the strata form the sample.
Step-by-step explanation:
Stratified random sampling is a random sampling technique in statistics .
- It includes the partition of the entire population into sub-parts called strata.
- The strata are formed on the basis of the characteristics shared by members .
- After the formation of strata, researcher randomly selects participants from each strata to ensure that that the participant of every group must involve in the sample to represent each character.
Hence, the correct answer is :
(A) randomly selected elements within each of the strata form the sample.
