Answer: 500 miles
Step-by-step explanation:
Given : Sergio and Lizeth have planned to rent a car from a company that charges $75 a week plus $0.25 a mile.
i.e. Fixed charge= $75
Rate per mile = $0.25
Let x denotes the number of miles.
Then, Total charges = Fixed charge+ Rate per mile x No. of miles traveled
= $75+ $0.25x
To keep budget within $200, we have following equation.
Hence, they can travel 500 miles and still keep within their $200 budget.
Answer:
<h2>V = 5 cm³</h2>Step-by-step explanation:
The formula of a volume of a pyramid:
<em>B</em><em> - base area</em>
<em>H</em><em> - height</em>
<em />
In the base we have a square withe side <em>s = 2cm</em>
The formula of an area of a square with side <em>s</em>:
Substitute:
The height <em>H = 3.75 cm</em>.
Calculate the volume:
Answer:
Step-by-step explanation:
Let be the average of the sample, and the population mean will be
We know that:
gr
Let be the standard deviation and n the sample size, then we know that the standard error of the sample is:
Where
In this case we are looking for:
This is:
or
Now we get the z score
Looking at the tables for the standard nominal distribution we get