Answer:
Atleast 271
Step-by-step explanation:
Given that a fashion designer wants to know how many new dresses women buy each year. Assume a previous study found the standard deviation to be 1.2.
Mean =7.9
For margin error to be at most 0.12
we have for 90% confidence level
![1.645*\frac{1.2}{\sqrt{n} } \leq 0.12\\\sqrt{n}\geq 16.45\\n\geq 270.6\\n\geq 271](https://tex.z-dn.net/?f=1.645%2A%5Cfrac%7B1.2%7D%7B%5Csqrt%7Bn%7D%20%7D%20%5Cleq%200.12%5C%5C%5Csqrt%7Bn%7D%5Cgeq%2016.45%5C%5Cn%5Cgeq%20270.6%5C%5Cn%5Cgeq%20271)
Answer:
The answer is 1
Step-by-step explanation:
5w² – 5w = 0
Add 5w both side
5w² – 5w + 5w = 5w – 5w
5w² = 5w
Now, Divide both side by 5w we get,
5w²/5w = 5w/5w
w = 1
Thus, The value of w is 1
84 = 4x
84 is the total amount of grapes
4 is the number of friend
x = how many grapes each friend will get