LAB 1 David Garcia (1)
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Eastfield College *
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1401
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Geology
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Feb 20, 2024
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Name: David Garcia Section: GEOL- 1401-72201 ENVR 1401 – EXERCISE Lab 1 – Math & Environmental Science DIRECTIONS: Use a pencil and ruler for constructing graphs. Be sure to include appropriate title, labels, and scales on all graphs. Include units on answers and be sure to answer to the listed decimal place when listed. 1.
Construct a bar graph for the following pH data for water samples.
(HINT: expand the y-axis) Test Tube # pH A 7.5 B 6.8 C 8.1 D 7.0 E 7.3 2.
Use the following data and given the assumptions listed below, construct a line graph and a paired bar graph: Fall Semester Month Science September ‘18 96 October ‘18 92 November ‘18 86 December ‘18 76 Spring Semester Month Science Grade February ‘19 81 March ‘19 85 April ‘19 79 May ‘19 95 LINE GRAPH – assume these grades represent PAIRED BAR GRAPH – compare average performance of one student over two semesters grades assuming two groups of students taking in one academic year the same course in sequential semesters
1 3.
Complete the table and construct a pie chart for the following data for the Quick-Mart Service Station. (Hint: A circle contains 360 degrees). Include a title, remediation method labels, and cost amounts on the pie chart below. Remediation Method for 2018 the Quick-Mart Service Station Cost Percentage of Budget (
to two decimal places
) Degrees of Circle (
to three decimal places
) Analytical testing $ 538,900 45%
162
Decontamination $ 177,665 15% 54.0
Groundwater treatment $ 254,347 21% 75.6 Health & Safety $ 49,475 4.1% 14.8 Soil excavation & disposal $ 188,950 16% 57.6 TOTALS 1,209,337
100%
360 2 Scientific Notation (
Use commas appropriately for numbers exceeding 1,000
) – If the value given is a number, then write it in scientific notation. If the value given is expressed in scientific notation, then write it as a number. 4.
28,736,000,000 = 2.8736 x 10^10 5.
1,000,000,000,000 = 1 x 10^12
6.
7,538,000
=
7.538 X 10^6 7.
4,742 = 4.742 x 10^3
8.
0.0000049328517 = 4.9328517 x 10^-6
Remediation Method for 2018
Analystical testing 45%
Decontamination 15%
Groundwater treatment 21%
Health & Safety 16%
Soil excavation &disposal 16%
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9.
6.242 x 10
-7
= 0.0000006242
10.
4.37 E + 12 = 4,370,000,000,000
11.
5.39 x 10
11
= 539,000,000,000
From the Background, here are the rules for significant figures again: 1.
Every nonzero digit in a recorded measurement is significant. 24.7 m, 0.743 m and 714 m all have three significant figures. 2.
Zeroes appearing between nonzero digits are significant. The measurements 7003 m, 40.79 m, and 1.503 m all have four significant figures. 3.
Zeroes in front of (before) all nonzero digits are merely placeholders; they are not significant. 0.0000099 only has two significant figures. 4.
Zeroes at the end of the number if a decimal point is present and also zeroes to the right of the decimal are significant. The measurements 1241.20 m, 210.100 m and 5600.00 all have six significant digits. 5.
Zeroes at the end of a measurement and to the left of an omitted decimal point are ambiguous. They are not significant if they are only place holders: 6,000,000 live in New York—the zeroes are just to represent the magnitude of how many people are in N.Y. But the zeroes can be significant if they are the result of precise measurements. Rounding & Significant Figures (retain the following as whole or decimal numbers): 3 Calculating Percentage Changes (calculate to two decimal places, rounding as appropriate) SHOW EQUATION TO BE SOLVED Answer 15.
342.91 to 477.38 = 16.
477.38 to 342.91 = 12. 13. 14. 47,830,000,000 to 2 significant figures 35.6971 to 3 significant figures 7.689 to nearest whole number = = = 48,000,000,000
35.7
7.7
((477.38- 342.91) * 100) / 342.91= 39.21
39.2% change ((342.91- 477.38) * 100) /477.38 -28.7% change
The Dallas County budget includes several departmental line-items that are related to environmental concerns. The following table lists amounts expended in 2017 and 2018, along with the projected budgetary allowance for 2019. Line Item $ in 2017 $ in 2018 $ in 2019 Fire Prevention & Public Education 158,000 271,000 308,000 Bioterrorism & Environmental Health 181,000 246,000 250,000 Clearing trash & debris from roadways 134,000 145,000 154,000 On-site Sewage Facility Inspections 220,000 233,000 228,000 Building Inspections 213,000 216,000 219,000 Permitting 124,000 126,000 129,000 17.
Calculate Annual Budget Totals: 1,030,000
1,237,000 1,288,000 What percentage (round to 2 decimal places) of the overall spending for various environmental services was allocated in 2019 to each of the following line items? SHOW EQUATION TO BE SOLVED Answer 18.
Fire Prevention & = Public Education 19.
Clearing trash & = debris from roadways 20.
On-site Sewage = Facility Inspections 21.
Permitting = 4 Calculate the following for these environmental issues. (round your answer to nearest whole number). SHOW EQUATION TO BE SOLVED Answer (308,000 / 1,288,000 ) * 100 = 24
24% (154,000 / 1,288,000) * 100 = 12
12 %
(228,000 / 1,288,000) * 100 = 18
18%
(129,000/1,288,000) * 100 = 10
10%
22.
2017 Line-item mean = 23.
2018 Line-item mean = 24.
2019 Line-item mean = 25.
Budget total mean = Based on discussion in the background document Math & Environmental Science, list three (3) advantages of understanding and using scientific notation and/or percentages. 26) Able to get more accurate numbers and estimates.
27) It can Help simplify very large numbers that lots of zeros.
28) Easier to incorporate these numbers into equations because they are more simplified in this way.
5 1,030,000/ 6 = 171,666.6667
171,667
1,237,000 / 6 = 206166.6667
206,167
1,288,000 / 6 = 214666.6667 214, 667
3,555,000 / 3 = 1,185,000
1,185,000
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