Answer:
4/420=105
Step-by-step explanation:
decompose 42 and divide by 4 is 10 and is 20 divided by 4 is 5
A <em>function </em>is a rule that assigns each vale of the independent variable to exactly one vale of the dependent variable.
The missing word is the function.
Point to remember:
The definition says that two values of x(independent variable ) may correspond to one value of y(dependent variable) but the vice versa is not true( means two values of y(dependent variable ) does not correspond to one value of x(independent variable) ). This explanation is very powerful tool to check that whether a relation is a function or not.
Answer:
21
Step-by-step explanation:
14*2=28
28(3/4)=21
21/(3/4)=28
28/2=14
If the ratio from Kala to Rose is 4:1, then for the 48 words Rose typed Kala typed 192 words. 48*4=192
Then Lita types twice as fast so 192*2=384.
It should be 384 words.
Answer:
The minimum sample size required is 71.
Step-by-step explanation:
The (1 - <em>α</em>)% confidence interval for population mean is:

The margin of error for this interval is:

It is provided that the population standard deviation <em>σ</em> can be estimated by the sample standard deviation <em>s</em>.
The given information is:
<em>s</em> = 18000,
Margin of error = $4200.
Confidence level = 95%
The <em>z</em>-value for 95% confidence level is,

*Use a <em>z</em>-table for the critical value.
Compute the sample size required as follows:

![n=[\frac{z_{\alpha/2}\times \sigma }{MOE}]^{2}](https://tex.z-dn.net/?f=n%3D%5B%5Cfrac%7Bz_%7B%5Calpha%2F2%7D%5Ctimes%20%5Csigma%20%7D%7BMOE%7D%5D%5E%7B2%7D)
![=[\frac{18000\times 1.96}{4200}]^{2}](https://tex.z-dn.net/?f=%3D%5B%5Cfrac%7B18000%5Ctimes%201.96%7D%7B4200%7D%5D%5E%7B2%7D)

Thus, the minimum sample size required is 71.