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well, if get this wrong dont blame me, blame my maths teacher (im only 13)
cent means 100 so percenages are out of 100
so hat means 1/2 is the same as 50% because 50% is one half of 100% ...get it?
that means 33.333% reacouring = 1/3 because 3 of 33.333% goes into 100%
i cant realy explain ratios and rates but i hope i have helped :D
grace
Wiki User
∙ 13y ago
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How can you model and represent rates and ratios?
no
How are ratios rates and unit rates used to solve problems?
g
How can you use ratios and rates to solve problems?
By dividing
A proportion states that two ratios or rates are?
equivalent.
How do you compare ratios-?
To compare ratios, compare the products of the outer terms by the inner terms.
When do you compare using ratios percents and rates and when do you compare using differences?
when you are specifically comparing 2 sets of data (2 #'s, 2 percents, 2 rates ect.)
How are ratios and rates related?
Rates are ratios that are renamed so that one of the numbers is 1. It is usually the denominator of the original ratio.
How can you model and represent rates and ratios?
no
How are ratios rates and unit rates used to solve problems?
g
What are the simularitis of rates and ratios?
65:700000000000000
What is the same between rates and ratios?
No! they are not the same. Ratios are things being compared (part to part) and rates are timing (25words/min). !HOPES THIS HELPS!
How can you use ratios and rates to solve problems?
By dividing
A proportion states that two ratios or rates are?
equivalent.
What jobs involve fractions?
Any job that uses rates uses fractions. For example, shipping rates are determined by weight or volume of the package being measured. The rate is a fraction in units of dollars per pound or dollars per cubic inch. A long-distance trucker who needs to complete a trip distance within a certain time might need to figure out his required minimum speed using rates.PercentagesAny job that uses percentages uses fractions, since a percentage is a ratio formed with the number 100. Therefore, any business involving tax calculation, tip calculation, or interest rates uses fractions. Banks, restaurants, movie theaters and department stores all use percentages, so teller, wait staff and store clerk positions are included here.HealthMedical equipment measures ratios and rates (for example, blood pressure and pulse). Prescription dosages are based on a ratio of medicine to body mass and to frequency of ingestion, itself a rate. Body-mass index is a ratio of height to weight used by doctors to judge fitness. Pharmacists, medical doctors and health staff must therefore be familiar with ratios and rates.EngineeringEngineering studies how variables in physical systems vary in proportion to each other. Therefore, engineers are steeped in fractions (proportions). Every engineering field uses fractions, from stress-to-strain ratios to chemical concentration ratios and reaction rates to ratios in electrical equations to solve for current and voltage.ScienceFractions are used everywhere in science: from radioactive decay rates to statistical analysis to anything using calculus (the study of rates of change). Even in biology, counting proportions of cells of a certain character, counting changing proportions of a population affected by disease, and pretty much any intersection of chemistry with biology uses fractions. Nearly every job in science uses fractions of some sort.CookingIn cooking, the ingredients are often measured in fractions of units. Recipes are often reduced to a portion of the original recipe, which involves finding fractions of the original ingredient measurements. Chefs, cooks and dietitians all use fractions.Farming and Car MechanicsA farmer deals in measures of rainfall and fertilizer, and how that relates to harvest and market prices. These relations form ratios, which are used to determine purchase and harvest schedules. And because farmers must be good businessmen, farmers are exposed to the use of fractions in the business world (interest rates, tax calculation, and so forth).A car mechanic also deals in fractions. For example, a differential pulley--a tool used by mechanics to lift engines--depends on two pulleys having similar radii. The ratio between the two determines the mechanical advantage. Maintenance work like tune-ups (such as replacement of spark plugs) aims to reduce rates of gas consumption, which are themselves fractions. And mechanic's tools are measured in fractions of inches and meters.
How do you compare ratios-?
To compare ratios, compare the products of the outer terms by the inner terms.
Why is it helpful to calculate percentage?
It is easier to understand rates of changes as percents, sometimes, than as a fraction. Such as the stock market fell 70%Also, you can compare percents and fractions are a little harder to compare. For example you got 91 percent right on your test and your friend took a similar test with twice as many problems and got 83% right. It is easy to compare the percents.There are many other reasons!
An equation that shows that two ratios or rates are equivalent?
Proportion
