Math
Refine Search
What is a number sentence?
- By Forinfos
- 07/12/2025
- 0 comments
Common symbols used in number sentences include: +, -, x, / or ÷, =, < and >. The last two, the "less than" and "greater than" signs are used in inequalities, where one side is not equal to the other. Students working on number sentences often have one number place of the sentence as an unknown to teach them how to do various computations necessary for solving equations. An example of a number sentence is 5 + 4 = 9.
What is the integral of xln(x)?
- By Forinfos
- 07/12/2025
- 0 comments
The equation for the integral xln(x) can be found through the integration techniques known as "integration by parts" and "the product rule." Following these rules, the two components of the equation x and ln(x) are separated out and expressed as d(fg) over dx. The integral function is also called the antiderivative because it works in the reverse of the derivative function.
What are the multiples of 75?
- By Forinfos
- 07/12/2025
- 0 comments
A multiple of a number refers to any number that is equal or larger than that original number that has the original number as a factor. This means that if a number can be divided by the original number with no remainder, then that number is a multiple of the original number. The original number would also be considered a factor of the larger number.
What is the definition of sampling distribution?
- By Forinfos
- 07/12/2025
- 0 comments
Sampling distribution is used to solve problems with varying levels of complexity. It is often used as the first step when finding confidence intervals or when performing a hypothesis test for parameters. Sampling distribution can identify variances within a given population. It can help to find a sample mean and provide information for population parameters as well.
What is the difference between horizontal and vertical analysis?
- By Forinfos
- 07/12/2025
- 0 comments
Horizontal analysis, or trend analysis, shows period-to-period changes in corresponding amounts on at least two comparable financial statements. It is useful in balance sheets, income statements and retained earning statements.Vertical analysis is also called common-size analysis. It shows each amount as a comparable percentage of the base figure, which is usually the total of the assets or liabilities. Vertical analysis is useful in analyzing sales figures, operating costs and income tax.
What are points that lie in the same plane?
- By Forinfos
- 07/12/2025
- 0 comments
The vertices of a triangle are a good example of three coplanar points. Similarly, a square, rhombus, trapezium and rectangle are two-dimensional plane figures. All four vertices of these figures are coplanar points.\nA cylinder is a three-dimensional figure. The points on the curved surface and the points on the bottom of the cylinder do not lie in the same plane and thus are non-coplanar.
How do you work out percentages without a calculator?
- By Forinfos
- 07/12/2025
- 0 comments
Make the percentage a fractionDetermine what the percentage you are trying to find would be. For example, if you wanted to calculate 33 percent of a number, you would use the fraction 1/3.Divide the number you are trying to find the percentage of by the denominatorTake the number you want to find the percentage of (for this example, assume it is 21) and divide it by the denominator, which is the bottom number of the fraction.Determine the answerDivide 21 by 3 and you find that the answer is 7. This model works any time you want to find the percentage of a number. Check your answerTake the answ..
What is the corollary to the triangle sum theorem?
- By Forinfos
- 06/12/2025
- 0 comments
The theorem states that the sum of all three angles in a triangle must equal 180 degrees. A corollary of that theorem would then have to mean that a triangle can include only one 90 degree angle or one obtuse angle. This must be true since a triangle with more than one 90 degree angle or more than one obtuse angle would not meet the requirements because the sum of those three angles would be larger than 180 degrees.
What 3-D shape has four faces?
- By Forinfos
- 06/12/2025
- 0 comments
To create a tetrahedron, three triangles come together and they meet at a vertex. The point where at least two straight lines come together is the vertex. When analyzing the ordinary convex polyhedra, the tetrahedron is the simplest of all of them. It is also the only one with less than five faces. It is a type of pyramid with triangular faces that come together at a common point and it has a flat polygon base.
What are all the multiples of seven?
- By Forinfos
- 06/12/2025
- 0 comments
Multiples are obtained by multiplying the same number by numbers in the set of natural numbers. The first multiple of a number is always the number itself, so the first multiple of seven (7 x 1) is seven itself. Multiplying 7 x 2 gives 14, and this is the second multiple of seven. The third multiple of seven is 7 x 3, yielding 21. Similarly, the nth multiple of seven is obtained by calculating 7 x n, where n is a natural number.\nMultiples of a number are exactly divisible by the given number. So, 35 is a multiple of seven and when divided by seven, it yields the remainder zero. To find out wh..