100% - 20% = 80%.
400 is 80% of what number?
Let n = the original price.
400 = 0.80n
400/0.80 = n
€500 = n
Understand?
Answer:
i can't see the rest of the question so i don't know the answer choices but:
since x≥8
whichever choice is less than 8 is incorrect
step-by-step explanation:
i can't see the rest of the question so i don't know the answer choices but:
7x≥56
x≥8
Answer: The standard error of the sample mean = 0.44
Step-by-step explanation:
Standard error of the sample mean =
<em> , where </em>
= population standard deviation , n= sample size.
Given : n= 45 ,
grams
The e standard error of the sample mean 

Hence, the standard error of the sample mean = 0.44