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How do you solve percent yield problems?

Balance the equationWhen creating a chemical reaction, you should write an equation that expresses the ratios of substances that are combined which balances with the amount of each element in the substances produced.\n\nEach substance is massed in grams before being added to the chemical reaction. Using the mass of those substances, account for the number of moles of each starting material. Use the ratios to determine which substances should be completely used and which ones should be left over. Assuming all of the available starting elements recombine in the reaction, calculate how many moles..

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What are some resources to find help with geometry?

FreeMathHelp.com has an interactive problem solver that takes the user step-by-step through solving a trigonometry equation, which is helpful for more advanced geometry. As well as having everything necessary for geometry and trigonometry homework, FreeMathHelp.com also has sections for algebra, calculus, statistics and sports formulas. If paying for geometry homework help is within reason, Tutor.com offers one-on-one access to qualified tutors at any time, which may be a better choice for a student who is really struggling with the concepts.

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What is the square root of 900?

The square root of 900 is any number, which when multiplied by itself, results in 900. Because 30*30 = 900 and (-30)*(-30) = 900, both 30 and -30 are considered square roots of 900.\nNote that the square root of the product of two nonnegative numbers is equivalent to the product of the square roots of each number; in other words, sqrt(x*y) = sqrt(x)*sqrt(y) where x and y are greater than or equal to zero. This property allows one to more easily calculate the square root of 900 by hand, because 900 = 9*100. In this way, sqrt(900) = sqrt(9)*sqrt(100) = 3*10 = 30.

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What is a physical data flow diagram?

Physical data flow diagrams are one of two diagrams common to information systems. The other type is a logical data flow diagram, which focuses on how the system operates.\nSince the path that data travels through in an information system can be complex, different shapes are used to outline the path. A square is used to indicate external entities, which include sources of data. Rounded rectangles are used to represent processes that the data undergoes through a system. Open-ended rectangles represent data storage sites, which can be electronic or physical. To indicate the flow of data through ..

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What is the area formula for a heptagon?

A heptagon refers to any 7-sided polygon. A regular polygon has seven sides of the same length that all have the same interior angle. The area can be calculated with a formula for a regular heptagon, but to calculate the area for an irregular heptagon, the shape must be broken apart into smaller polygons before summing the individual areas.

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What does interval mean in math?

To calculate a confidence interval, the researcher needs to have three pieces of information: the confidence level, the statistic and the margin of error. The confidence level is usually given as a percentage (e.g. 90 percent), and the statistic is usually given as a sample mean, while the margin of error is calculated by multiplying critical value by standard deviation or standard error. With this information, the confidence interval can be calculated using a sample statistic plus or minus margin of error.

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What is the Pythagorean Theorem used for?

Modern builders may mark adjacent lengths of a frame 6 feet and 8 feet from a corner, and then adjust the length between the end points to 10 feet to meet the relationship of the Pythagorean triplet 6-8-10. When all three of the values of a Pythagorean triplet are divisible solely by the greatest common denominator of 1, the triplet is said to be coprime or primitive. Some examples of primitive Pythagorean triplets are 3-4-5, 5-12-13 and 7-24-25.Another way of expressing the Pythagorean Theorem is that the hypotenuse of a right triangle is equal to the square root of the sum of the squares of ..

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Where can you find a multiplication chart of numbers 1 through 12?

There is a simple and complete multiplication chart of numbers 1 through 12 at MathIsFun.com. This website is aimed at helping students learn math through worksheets, games and activities.\nFind multiplication tables for numbers 0 through 12 at TimesTable.co. This website features times tables sorted by number in either ascending or descending order. It also has worksheets to help students learn arithmetic concepts.

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How do you use the distributive property?

Following the order of operations in mathematics, or PEMDAS, the equation a(b+c) requires users to first add the numbers in the parenthesis before multiplying them by "a." Following the order of operations is easy when all real numbers are present, but it becomes more complicated once an algebraic variable is introduced. It is at this point that users require the use of the distributive property to simplify the problem.For example, in arithmetic, the problem proceeds as follows:2(4+6)2(10)20However, when presented with a variable, this changes. First, the problem is easier to understand withou..

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How do carpenters use math?

Accurately measuring and cutting wood and other materials are essential skills for any carpenter. Most structures that a carpenter builds follow detailed plans that lay out the dimensions of that structure. Simple arithmetic is sufficient for most tasks; however, trigonometry and algebra are sometimes required.\nAccurately calculating the amount of material and labor required to complete a job saves both time and money. Time spent waiting for additional materials is wasted and unproductive, while purchasing excess material or hiring too many workers wastes money. A fundamental understanding of..

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