0.2*4.4*5 is 4.4. 1/5 of 5 (or 0.2 of 5) is 1, and 1*4.4 is 4.4.
:)
Answer:
It has to be B or D
Step-by-step explanation:
Hope it helps :)
Answer:
13 , 17 and 25 cm.
Step-by-step explanation:
Let the length of the first side be x cm.
Then the second is x+4 and the third is 2x-1 cm long.
As the perimeter = 55 cm we have the equation:
x + x + 4 + 2x - 1 = 55
4x + 3 = 55
4x = 52
x = 13 cm.
Answer: ![=(29.1596\text{ degrees},\ 30.2404\text{ degrees})](https://tex.z-dn.net/?f=%3D%2829.1596%5Ctext%7B%20degrees%7D%2C%5C%2030.2404%5Ctext%7B%20degrees%7D%29)
Step-by-step explanation:
Given: Sample size: n = 41
Sample mean
degrees
Population standard deviation
degrees
Confidence level (c) = 80% =0.80
Significance level (a) = 1- c = 1-0.80 = 0.20
z-score for 80% confidence level : z = 1.2816 [from z-table]
Confidence level for population mean :-
![\overline{x}\pm z\dfrac{\sigma}{\sqrt{n}}](https://tex.z-dn.net/?f=%5Coverline%7Bx%7D%5Cpm%20z%5Cdfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D)
![=29.7\pm ( 1.2816)\dfrac{2.7}{\sqrt{41}}](https://tex.z-dn.net/?f=%3D29.7%5Cpm%20%28%201.2816%29%5Cdfrac%7B2.7%7D%7B%5Csqrt%7B41%7D%7D)
![=29.7\pm ( 1.2816)\dfrac{2.7}{6.403124}](https://tex.z-dn.net/?f=%3D29.7%5Cpm%20%28%201.2816%29%5Cdfrac%7B2.7%7D%7B6.403124%7D)
![=29.7\pm ( 1.2816)(0.42167)](https://tex.z-dn.net/?f=%3D29.7%5Cpm%20%28%201.2816%29%280.42167%29)
![=29.7\pm 0.5404](https://tex.z-dn.net/?f=%3D29.7%5Cpm%200.5404)
![=(29.7-0.5404,\ 29.7+0.5404)](https://tex.z-dn.net/?f=%3D%2829.7-0.5404%2C%5C%2029.7%2B0.5404%29)
![=(29.1596,\ 30.2404)](https://tex.z-dn.net/?f=%3D%2829.1596%2C%5C%2030.2404%29)
Hence, 80% confidence interval for the temperatures in the freezer ![=(29.1596\text{ degrees},\ 30.2404\text{ degrees})](https://tex.z-dn.net/?f=%3D%2829.1596%5Ctext%7B%20degrees%7D%2C%5C%2030.2404%5Ctext%7B%20degrees%7D%29)