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- Contemporary math applications
- Exam 2
- Ratio and proportions
- Ratios and rates: summary of
This module is from Fundamentals of Mathematics by Denny Burzynski and Wade Ellis, Jr. This module reviews the key concepts from the chapter "Ratios and Rates."
Summary of key concepts
Denominate numbers (
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Numbers that appear along with units are
denominate numbers . The amounts 6 dollars and 4 pints are examples of denominate numbers.
Like and unlike denominate numbers (
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Like denominate numbers are denominate numbers with like units. If the units are not the same, the numbers are
unlike denominate numbers .
Pure numbers (
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Numbers appearing without a unit are
pure numbers .
Comparing numbers by subtraction and division (
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Comparison of two numbers by subtraction indicates how much more one number is than another. Comparison by division indicates how many times larger or smaller one number is than another.
Comparing pure or like denominate numbers by subtraction (
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Numbers can be compared by subtraction if and only if they are pure numbers or like denominate numbers.
Ratio rate (
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A comparison, by division, of two like denominate numbers is a
ratio . A comparison, by division, of two unlike denominate numbers is a
rate .
Proportion (
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A
proportion is a statement that two ratios or rates are equal.
is a proportion.
Solving a proportion (
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To
solve a proportion that contains three known numbers and a letter that represents an unknown quantity, perform the cross multiplication, then divide the product of the two numbers by the number that multiplies the letter.
Proportions involving rates (
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When writing a proportion involving rates it is very important to write it so that the same type of units appears on the same side of either the equal sign or the fraction bar.
Five-step method for solving proportions (
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- By careful reading, determine what the unknown quantity is and represent it with some letter. There will be only one unknown in a problem.
- Identify the three specified numbers.
- Determine which comparisons are to be made and set up the proportion.
- Solve the proportion.
- Interpret and write a conclusion.
When solving applied problems, ALWAYS begin by determining the unknown quantity and representing it with a letter.
Percents (
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A ratio in which one number is compared to 100 is a
percent . Percent means "for each hundred."
Conversion of fractions, decimals, and percents (
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It is possible to convert decimals to percents, fractions to percents, percents to decimals, and percents to fractions.
Applications of percents:
The three basic types of percent problems involve a
base , a
percentage , and a
percent .
The
base is the number used for comparison.
Percentage (
[link] )
The
percentage is the number being compared to the base.
By its definition,
percent means
part of .
Solving problems (
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Questions & Answers
distinguish between anatomy and physiology
Anatomy is the study of internal structure of an organism while physiology is the study of the function/relationship of the body organs working together as a system in an organism.
adeyeye
distinguish between anatomy and physiology
regional anatomy is the study of the body regionally
what is the meaning of regional anatomy
epithelial tissue: it covers the Hollow organs and body cavities
in short way what those epithelial tissue mean
in short way what those epithelial tissue mean
Chizoba
What is the function of the skeleton
and body shape/form
Aishat
what is physiology
AminchiSunday
physically is the study of the function of the body
Najaatu
that is what I want ask
YAU
pls what are the main treatment of hiccups
YAU
physiology is the study of the function of the body
Najaatu
hiccups happen when something irritates the nerves that course your diaphragm to contract
Najaatu
how did hypothalamus manege to control all activities of the various hormones
malual
what is protein
Abdulsalam
how can I treat pain a patient feels after eating meals
how do I treat a three year old baby of skin infection?
It depends on the type of infection. Bacterial, fungal, parasitic or viral?
schler
if you can share the sign ad symptoms of the skin infection then u geh the treatment cox they're different sign ad symptoms of skin infection with different treatment
Sa
the sign and symptoms of maleria
Abdulsalam
prostaglandin E2 is the final
mediator.
Lemlem
prostaglandin E2 is the final
mediator of fever.
Lemlem
Discuss the differences between taste and flavor, including how other sensory inputs contribute to our perception of flavor.
taste refers to your understanding of the flavor . while flavor one The other hand is refers to sort of just a blend things.
Faith
While taste primarily relies on our taste buds, flavor involves a complex interplay between taste and aroma
Kamara
which drugs can we use for ulcers
Omeprazole
Cimetidine / Tagament
For the complicated once ulcer - kit
Patrick
what is the function of lymphatic system
to drain extracellular fluid all over the body.
asegid
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include:
1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
Adama
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Source:
OpenStax, Contemporary math applications. OpenStax CNX. Dec 15, 2014 Download for free at http://legacy.cnx.org/content/col11559/1.6
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