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How many faces, edges and vertices does a sphere have?
- By Forinfos
- 24/02/2025
- 0 comments
A vertex is a point where two or more straight lines meet. Since a sphere has no straight lines, it also has no vertices. An edge is a line segment that joins two vertices. Since a sphere has no vertices, it also has no edges. A face is defined as a flat surface of a three-dimensional figure. The continuously curving surface of a sphere has no flat places, and so a sphere has no faces.
What are the June 2010 trig Regents answers?
- By Forinfos
- 23/02/2025
- 0 comments
As of August 2014, a total of ten previous Algebra 2 and Trigonometry exams are available for review. Resources available for each previous exam administration include the actual examination questions without answers and the correct answers in separate files. Diligently working through previous exams is a good way to review the concepts covered in class.\nThe sample response sets represent another useful study resource. These offer insight into what differentiates great answers that receive full credit from weaker answers that receive only partial credit or no credit. Avoid making the types of..
What are two non-collinear rays with a common endpoint?
- By Forinfos
- 23/02/2025
- 0 comments
The different types of angles formed are acute, right, obtuse and reflex angles. A reflex angle is greater than 180 degrees but less than 360 degrees. In math, the convention for naming angles is either to use the vertex point or by using three points. Two of these points lie on either angle sides, and the third is the vertex. For example, an angle having point F on one angle side, point G on the other side and the vertex H can be named angle H, angle FHG or angle GHF.
How do you go about dividing a polynomial by a monomial?
- By Forinfos
- 23/02/2025
- 0 comments
Figure out which is the polynomial and which is the monomialAn algebraic expression with just one term is called a monomial. That could be a variable, number, or a number attached with a variable. For example x and y are both variables, 11 and 12 are numbers, and 3x and -8xy are numbers attached to variables. A polynomial is an expression with more than one term, all joined by either a plus or minus sign. For example, 6x+6y and 7x+3xy+z+5 are both polynomialsSplit the operation into parts.Process each term of the polynomial by the single term of the monomial. For example, if dividing 3xy+9x+12..
How do you find prime numbers?
- By Forinfos
- 23/02/2025
- 0 comments
Look for even numbers that have a factor of 2Check if the number is even by looking to see if the last digit is 2, 4, 6, 8 or 0; if it is, the number is not prime, unless the number is 2. Remember that even numbers are divisible by 2 and so are not prime.Look for numbers that have a factor of 3Add the digits of the number together. Divide the sum by 3; if you get a whole number, the original number is divisible by 3, which means that it is not prime. For example, for the number 771, add 7 + 7 + 1 to get 15. 3 divides evenly into 15 five times, meaning that 771 is not prime.Test for a factor of..
What is a skew-symmetric matrix?
- By Forinfos
- 23/02/2025
- 0 comments
Skew-symmetric matrices are easy to recognize visually. The diagonal elements of a skew-symmetric matrix are always zero. Each off-diagonal element is the negative of the corresponding element on the other side of the diagonal. For example, element A(12) of the matrix A is equal to -A(21), where A(12) is the element in the first row and the second column of the matrix. All skew-symmetric matrices are singular, which means that they have a determinant of zero and no inverse.
What are examples of cylinders?
- By Forinfos
- 23/02/2025
- 0 comments
A cylinder is any round-shaped object with a circular base and straight sides. The volume of a cylinder is the product of the area of the base and its height. The surface area of a closed cylinder is obtained by adding the surface area of the top, the bottom and the side. While a cylinder can have longer sides than its diameter, other cylinders have shorter sides than their diameter.\nA cylinder whose cross-section is an ellipse is referred to as an elliptic cylinder, while one whose cross-section is a parabola is a parabolic cylinder. On the other hand, one whose cross-section is a hyperbola ..
What are length by width by height measurements?
- By Forinfos
- 23/02/2025
- 0 comments
Volume formulas differ depending on the shape of the object being measured. Cones, cylinders, spheres and pyramids are measured differently from each other and from cubes or rectangular solids.\nTo find the volume of a cube with sides 3 inches long, multiply the length times the width times the height, 3 x 3 x 3. This gives 27, so the volume is 27 inches cubed, or 27 cubic inches.
What are two different ways to name a plane?
- By Forinfos
- 23/02/2025
- 0 comments
A plane is a flat surface that extends infinitely in all directions; thus, a lot of points can be found on a given plane. The plane can be named by taking any three points on it, in no specific order, as long as these points are not on a straight line. An example is plane ABC, given that points A, B and C are found on the plane and are not collinear.
What is a derivative of xlnx?
- By Forinfos
- 23/02/2025
- 0 comments
The product rule of differentiation states that the derivative of a product of two functions f(x) and g(x) is given by f(x)g'(x) + g(x)f'(x), where f'(x) is the derivative of f(x) with respect to x and g'(x) is the derivative of g(x) with respect to x. Letting f(x) = x and g(x) = ln(x), the mathematician can derive f'(x) = 1 and g'(x) = 1/x. Substituting these values into the formula gives d(xln(x))/dx = ln(x) + 1.