Math

Refine Search

What lessons are available for second grade math?

Smart Tutor's online number and operations game focuses on addition, in particular the addition of three or more numbers. This interactive lesson engages students with concrete models in problem-solving. The measurement lesson illustrates the monetary value of coins as students count change for in-game purchases. Smart Tutor's geometry game uses two-dimensional shapes to demonstrate fractional parts.\nAdaptiveMind's 201 lessons for second-grade math are divided into 10 different lesson areas, from number sense to fractions. Each lesson includes 500 problems replete with explanat..

Continue Reading

What are some geometric terms?

There are five different types of triangle terms: right triangles, which have a 90-degree angle and two other angles with a sum equal to 90 degrees; obtuse triangles, which have one angle that is greater than 90 degrees; equilateral triangles, which have three 60-degree angles; isosceles triangles, which have two sides that are congruent and two angles that are congruent; and acute triangles, which have no degree larger than 90 degrees.\nSome terms for geometric angles include acute angles, which are smaller than 90 degrees; right angles, which are exactly 90 degrees; obtuse angles, which meas..

Continue Reading

How do you factor a trinomial?

Identify the factors of cConsider the problem x^2 - 7x + 12. Find the factors of c (12, in this case) to yield 1, 2, 3, 4, 6 and 12. List these in opposing pairs that multiply to make 12 (1, 12; 2, 6; 3, 4).Isolate the correct factors for this problemLook at each pair of factors to determine which pair adds up to b (-7, in this case). Remember that a negative times a negative yields a positive, which means that both factors end up as negative numbers for the example problem. Write the pairings in this way: 1 + 12 = 13; 2 + 6 = 8; 3 + 4 = 7. Identify -3 and -4 as the factors, as those add up to..

Continue Reading

Where can you find the answers for Glencoe Algebra 2?

The Slader.com website also has answers for state-specific Algebra 2 books such as the 2007 Texas Algebra 2 book, the 2015 TEKS Texas Algebra 2 book, and the 2005 and 2008 Algebra 2 California books. It also has the solutions to the 2010 Algebra 2 Indiana book, the 2010 Algebra 2 Kentucky book, and the 2005 Algebra 2 Tennessee and Louisiana books.

Continue Reading

How do you add fractions with unlike denominators?

Determine which denominator you want to use, and find the least common multipleAssume you have fractions of 2/3, 9/10 and 4/5. It's easier to multiply than to divide, so you need to find the least common multiple of all the denominators. In this case, the least common multiple is 30.Convert the fractionsStart with the fraction with the largest number in the denominator; 10 multiplied by 3 is 30. To make the fraction equal, both the numerator and denominator have to be converted; 9/10 converts to 27/30. 2/3 converts to 20/30, and 4/5 converts to 24/30.Add the numeratorsYou should have nume..

Continue Reading

How do I measure the area of a room in square feet?

For a triangular room, measure the floor and height in feet. Multiply these together and divide the result by two; the result is the area of the triangular room. To find the area of a circular room, measure the number of feet from a point on the wall to the center of the room to determine the radius. Multiply the radius by 3.14, and the result is the square footage of the room. For a half-circle room, divide the total area by two. Using these methods or a combination of them, the area of a room can be determined no matter its shape.

Continue Reading

How do you find the percentage of a number?

For example, since a percentage can be rewritten as a decimal number, the first step to finding 12.5 percent of 72 is to convert 12.5 into an equivalent decimal. This is done by moving the decimal point two places to the left, which equals 0.125. The second step is to multiply 0.125 by 72, the base, to get the percentage, 9.

Continue Reading

What does tangent equal?

The tangent is one of three primary functions in trigonometry. The other two primary functions are the cosine and the sine. The sine function has an equation of sin(degrees) = opposite / hypotenuse. The cosine function has an equation of cos(degrees) = adjacent / hypotenuse. There is also a useful equation that says the tan(degrees) = sin(degrees) / cos(degrees).The Pythagorean Theorem is also used in trigonometry and is often used with the three trigonometric functions. The Pythagorean Theorem can be written as a^2 + b^2 = c^2 and is only applicable in a right triangle. Other triangles cannot..

Continue Reading

What is the difference between log and ln?

Technically, the log function can be considered to the base of any number greater than zero, although when written without additional notation, it is assumed to be to the base of 10. The constant e is known as Euler's number and is equal to approximately 2.718. A log function to the base of 2.718 would be equal to the ln.

Continue Reading

How do you solve the traveling salesman problem?

According to Joe Malkevitch, the traveling salesman problem involves a hypothetical salesman starting from his home, making his rounds to sell his goods and then returning home. The problem for the salesman is to take the route that costs the least, called the minimal cost tour or the optimal tour. The traveling salesman problem appeared in mathematics as early as 1832, when it was referenced as a practical problem in a German book. Karl Menger is credited with popularizing the problem in the European mathematical community in the 1920s, and Merrill Flood popularized it in the United States. F..

Continue Reading
Showing 2261 to 2270 of 3956 (396 Pages)