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just olya [345]
3 years ago
10

The atmospheric pressure at sea level is 14.7 lb/in2. This pressure is reduced by half for each 3.6 miles above sea level. Which

graph correctly identifies the amount of atmospheric pressure based on height, in miles, above sea level?
Mathematics
2 answers:
Oxana [17]3 years ago
5 0
Find attached a graph that I constructed.

To do that graph I used Excel.

First I did a table with this set of points:

<span><span><span>height      presuure
</span> <span> miles        psi
</span> <span> 0              14,7 </span> <span> <---- initial data

3.6           7.35 </span> <span> <--- increase hegiht 3.6 miles => half pressure

7.2            3.675 </span> <span> <---- second increase of 3.6 miles in height

10. 8         1.8375 </span> <span> <---- third increase of 3.6 miles in height

14.4           0.91875 </span> <span>

18              0.459375 </span> </span></span>
Download pdf
drek231 [11]3 years ago
3 0

Answer:

It's B on edge, short and sweet :)

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What is the relative frequency of students that studied independently for more than 2 hours to the total number of students that
AlladinOne [14]

This question is incomplete.

The complete question says;

The two-way table shows the number of hours students studied and whether they studied independently or with a study group.

What is the relative frequency of students that studied independently for more than 2 hours to the total number of students that studied independently?

a) 0.4               c) 0.25                    

b) 0.33            d) 0.11

Table is attached as image

                     

Answer:  C (0.25)

The number of students that studied for more than 2 hours as given in the table are 4.

The total number of people that studied independently include those that studied less than 2 hours and those that studied for more than 2 hours.

Those that studied less than 2 hours independently are 12.

Those that studied more than 2 hours independently are 4.

Hence the total number of people that studied independently is 16.

Therefore the relative frequency of students that studied independently for more than 2 hours to the total number of students that studied independently would be = 4/16 = 1/4 = 0.25.

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