w - width
2w + 5 - length
w + w + (2w + 5) + (2w + 5) = 6w + 10 - perimeter
34 cm - perimeter
The equation:
6w + 10 = 34 <em>subtract 10 from both sides</em>
6w = 24 <em>divide both sides by 6</em>
w = 4 cm
2w + 5 = 2(4) + 5 = 8 + 5 = 13 cm
<h3>Answer: Width = 4cm, Length = 13cm</h3>
62 divided by 8.3 is 7.4
Your answer should be 7.4 gallons
Answer: the required sample size = 155
Step-by-step explanation:
If the standard deviation of the prior study is known, then the formula to compute required sample size:
, where E = Margin of error, z* = Critical value,
= populion standard deviation.
Given: E = 3.7 , ![\sigma=28](https://tex.z-dn.net/?f=%5Csigma%3D28)
Critical value for 90% confidence = 1.645
Required sample size: ![n=(\frac{1.645\times28}{3.7})^2](https://tex.z-dn.net/?f=n%3D%28%5Cfrac%7B1.645%5Ctimes28%7D%7B3.7%7D%29%5E2)
![n=(12.4486486486)^2\approx155](https://tex.z-dn.net/?f=n%3D%2812.4486486486%29%5E2%5Capprox155)
Hence, the required sample size = 155
I thunk it should be, if y=2 and x=8 then yeah