Answer:
n=40 boys
Step-by-step explanation:
-Margin of error is given by the formula:
-The z score for a probability of 92% is 1.75
#We make n the subject of the formula and substitute at a 92% confidence:
![E=z\frac{\sigma}{\sqrt{n}}\\\\\sqrt{n}=\frac{z\sigma}{E}\\\\n=[\frac{z\sigma}{E}]^2\\\\\therefore n=[\frac{1.75\times 1.8}{0.5}]^2\\\\=39.69\approx 40](https://tex.z-dn.net/?f=E%3Dz%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%5C%5C%5C%5C%5Csqrt%7Bn%7D%3D%5Cfrac%7Bz%5Csigma%7D%7BE%7D%5C%5C%5C%5Cn%3D%5B%5Cfrac%7Bz%5Csigma%7D%7BE%7D%5D%5E2%5C%5C%5C%5C%5Ctherefore%20n%3D%5B%5Cfrac%7B1.75%5Ctimes%201.8%7D%7B0.5%7D%5D%5E2%5C%5C%5C%5C%3D39.69%5Capprox%2040)
Hence, he needs approximately 40 boys for the study
She needs to charge 0.75$ to each muffin to make 9$ a day .
Answer:
y = 12 when x = 6/7.
Unless you give a formula (function, or equation) that specifies their relationship, one cannot find x when y equals something else.
Step-by-step explanation:
Answer:
For Skyhigh : 40 friends
For Jump it up : 90 friends
Step-by-step explanation:
Given that :
Maximum spending = $250
SKY HIGH FEES :
Party set up fee = $50 ; Amount paid per person = $2
JUMP IT UP FEES :
Party set up fee = $70 ; Amount paid per person = $2
THEREFORE, the inequality statement to obtain the number of friends for eack trampoline center goes thus:
Party setup fee + Number of persons * fee per person ≤ maximum spending
SKY HIGH:
50 + 5x ≤ 250
5x ≤ 250 - 50
5x ≤ 200
x ≤ 200/5
x ≤ 40
Hence,
Skyhigh can accommodate 90 friends Given the conditions
JUMP IT UP:
70 + 2x ≤ 250
2x ≤ 250 - 70
2x ≤ 180
x ≤ 180/2
x ≤ 90
Jump it up can accommodate up to 90 friends Given the conditions.
Answer:
-31>v
Step-by-step explanation:
look above there
hope it helps
