Answer:
Step-by-step explanation:
Unknown number be 'x'
4x-10>1000
Answer:
24
Step-by-step explanation:
:)
Answer: 9
5x+5=6x-4 and you just solve it, the solution will be 9
Answer:
Sample size is 
Step-by-step explanation:
Given that,
Margin of error
%
Confidence level
%
Suppose, sample proportion
i.e. 
We know that,
Margin of error 
∴ 





squaring on both side,
∴ 
Hence, the sample size is,

Hence, the correct option is 
I can’t see the picture I’m sorry if I can’t help you