Math

A:

The word "equation" is related to the word "equals" and generally describes a state of balance or equilibrium, according to Dictionary.com. Equations are commonly used in mathematics and chemistry.

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    • What is the acceleration of a bullet?

      Q: What is the acceleration of a bullet?

      A: The formula for finding the acceleration of a bullet is A = v^2/2l, or velocity squared divided by two times the barrel length. Velocity means muzzle velocity, or the speed at which a bullet leaves the barrel of the gun.
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    • Who discovered pi in math?

      Q: Who discovered pi in math?

      A: The identity of the first person to discover that the ratio between the diameter and the circumference of a given circle is a constant will probably never be known. The search for that constant, commonly known as pi, goes back nearly 4,000 years, to the Egyptians and Babylonians.
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    • How is algebra used in everyday life?

      Q: How is algebra used in everyday life?

      A: People use algebra in their daily lives when they make decisions about health, fitness, financial and money matters and when cooking. Algebra involves the use of known variables and fixed numbers in equations to find the values of unknown numbers.
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    • Why do people hate math?

      Q: Why do people hate math?

      A: While people struggle with math for many reasons, one of the most common is that math is a sequential subject and missing one concept along the way leaves the student in a growing state of confusion. A child who struggles with basic arithmetic doesn't have the foundation for algebra or advanced math classes. Other math-haters struggle to connect math to real life or suffer from a learning disability with numbers.
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    • How do I calculate the volume of a round tank?

      Q: How do I calculate the volume of a round tank?

      A: If the round tank is spherical, the radius of the interior space must be measured; the radius is one-half of the diameter. The volume is equal to the radius cubed multiplied by pi multiplied by 4/3.
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    • What is x squared plus x squared?

      Q: What is x squared plus x squared?

      A: The sum of x² plus x² is 2x². The problem requires adding one x squared to one more x squared, which equals two x squared. Substituting 3 for x, 3² + 3² = 2(3²), or 9 + 9 = 18.
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    • How much money is in a roll of quarters?

      Q: How much money is in a roll of quarters?

      A: In the United States, a roll of quarters is worth $10. It includes 40 quarters.
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    • How big is a stack of one trillion dollar bills?

      Q: How big is a stack of one trillion dollar bills?

      A: A stack of one dollar bills equals $100 and measures .43 inches high, which means that $1 trillion dollar bills would stack to a height of approximately 67,866.16 miles. The moon is about 238,855 miles from the Earth, which would require a stack of $3.5 trillion dollar bills to reach.
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    • Why are high school math word problems important?

      Q: Why are high school math word problems important?

      A: Math word problems are important for high school students because they help develop a conceptual understanding of the processes involved in arriving at solutions and enhance students' abilities to communicate mathematically. Word problems also may help students become more interested in math by showing how concepts they have been studying abstractly can be put to use in real-world situations.
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    • How is math used in the real world?

      Q: How is math used in the real world?

      A: Math is useful for economics, science, sports, social fields and a wide range of other areas for making decisions and analyzing information. Basic math skills are essential for many jobs. Math has been a core component of many human advances.
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    • Who created numbers?

      Q: Who created numbers?

      A: The Babylonian society used a cuneiform method of writing that included numerical characters; this is the earliest-known form of numbers, meaning that, as far as humans know, the Babylonians created numbers. This system of numerical writing is about 5,000 years old, and it is a base-60 system as opposed to a base-10 system, which is what most humans use for counting and mathematics in the modern world. Time measurements, in which an hour consists of 60 minutes and a minute consists of 60 seconds, are one example of a sexidecimal, or base-60, numerical system that is alive and well in the modern world.
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    • What is a "digit" in math?

      Q: What is a "digit" in math?

      A: "Digits" are the symbols or characters used to represent a number visually. A number like five contains one digit, whereas a number like 555 contains three digits. This is easily seen when they are written as numerals: 5 versus 555.
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    • How do you calculate the midpoint Riemann sum?

      Q: How do you calculate the midpoint Riemann sum?

      A: A Riemann sum is a method of approximating the area under the curve of a function. It adds together a series of values taken at different points of that function and multiplies them by the intervals between points. The midpoint Riemann sum uses the x-value in the middle of each of the intervals.
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    • How many millimeters equal 1 meter?

      Q: How many millimeters equal 1 meter?

      A: One thousand millimeters is equal to 1 meter. The meter is the standard unit of length in the International System of Units, also known as the metric system. "Metre" is the standard spelling for all English-speaking countries except the United States. "Meter" is the accepted U.S. spelling.
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    • What is the precise definition of a limit in calculus?

      Q: What is the precise definition of a limit in calculus?

      A: The definition of a limit in calculus is the value that a function gets close to but never surpasses as the input changes. Limits are one of the most important aspects of calculus, and they are used to determine continuity and the values of functions in a graphical sense.
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    • How are logarithms used in the world?

      Q: How are logarithms used in the world?

      A: A few examples of how logarithms are used in the real world include measuring the magnitude of earthquakes or the intensity of sound and determining acidity. A logarithm explains how many times a number is multiplied to a power to reach another number. It is expressed as loge(x) and is commonly written as ln(x).
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    • What is a nonlinear function in math?

      Q: What is a nonlinear function in math?

      A: A nonlinear function in math creates a graph that is not a straight line, according to Columbia University. Three nonlinear functions commonly used in business applications include exponential functions, parabolic functions and demand functions. Quadratic functions are common nonlinear equations that form parabolas on a two-dimensional graph.
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    • How is calculus used in medicine?

      Q: How is calculus used in medicine?

      A: According to class notes from Bunker Hill Community College, calculus is often used in medicine in the field of pharmacology to determine the best dosage of a drug that is administered and its rate of dissolving. Usually, the drug is slowly dissolved in the stomach.
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    • What is numerical data?

      Q: What is numerical data?

      A: Numerical data is data that is expressed with digits as opposed to letters or words. For example, the weight of a desk or the height of a building is numerical data.
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    • How does a graph help people interpret scientific data?

      Q: How does a graph help people interpret scientific data?

      A: Graphs of various types provide convenient visual representations of scientific data that would otherwise be presented in intimidating blocks of text or a series of numbers. Graphs represent statistics such as changes over time, comparisons, or parts of a whole. Graphs can be used to make date more accessible to both scientists and laypersons.
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    • What are the names of graphs?

      Q: What are the names of graphs?

      A: Several types of graphs are used for displaying information in mathematics including the bar graph; pie chart or circle graph; histogram; stem and leaf plot; dot plot; scatter plot; and time-series graphs. The type of graph chosen depends on whether the data is quantitative, qualitative or paired.
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    • What is a segmented bar graph?

      Q: What is a segmented bar graph?

      A: A segmented bar graph is similar to regular bar graph except the bars are made of different segments that are represented visually through colored sections. A segmented bar graph is sometimes known as a stacked bar graph, and it offers greater detail about data sets.
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    • Why are points connected in a line graph but not in a bar graph?

      Q: Why are points connected in a line graph but not in a bar graph?

      A: A line graph is a graph that charts the relationship between two variables or a progression of a single quantity through time. Without the lines connecting points of data, it would be difficult to make sense of the data being presented if there was no overall trend between the dots. A bar graph, on the other hand, is meant to compare two or more statistics, such as population figures.
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    • How is a tally chart made?

      Q: How is a tally chart made?

      A: To make a tally chart, single lines are drawn next to one another until reaching five, where the fifth line crosses the four other lines diagonally. This is a simple charting method that can be used quickly for surveys or other needs.
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