Having minor homework questions or simply want to make sure your homework answers are correct? Then use our free service to get quick answers to your homework questions in mathematics, physics, programming, economics, chemistry and biology. We already have a database of multiple homework questions and answers you can look through . If you can’t find the solutions to your homework problems, then post your homework questions and find a well-formulated answer from a professional within a very short timeframe.
Please save your time and DO NOT send us your full assignments or not precise, well stated questions in mathematics, physics, programming, economics, chemistry or biology as they will be ignored. In this section we can answer only your short questions of qualitative, primary theoretical nature (for FREE!). Use filters to display the questions to a particular subject or section. By entering your e-mail in the box "Search" you can browse the questions posted exclusively by you. Do not worry if you cannot find your question in the list after it has been submitted; every question is being checked by a moderator and appears in the list only after its approval.
Ask Your question
Search & Filtering
N ≥ 3 points lie on a plane, but not all of them lie on a straight line. Prove that there is a circle passing through three of these points and containing none of the remaining points.
Prove that if a polygon has several axes of symmetry, they all intersect in one point.
Prove that if one convex polygon lies inside another one, then the perimeter of the inner polygon does not exceed the perimeter of the outer polygon.
Sum of four unit vectors equals zero. Prove that they can be divided into two pairs of opposite vectors.
Polygon has the center of symmetry O. Prove that the sum of the distances to its vertices is minimal for point O.
The lengths of two sides of the triangle are 3.14 and 0.67. Find the length of the third side if known that it is an integer.
A circle cuts out equal chords on all sides of the quadrilateral. Prove that it is possible to inscribe a circle in that quadrilateral.
The radius of the inscribed circle of the triangle equals 1, heights are integers. Prove that the triangle is equilateral.
A solid metallic sphere of radius a carries total charge Q. No other charges are nearby. The electric field just outside its surface is kQ/a^2 radially outward. At this close point the uniformly charged surface of the sphere looks exactly like a uniform flat sheet of charge.Is the electric field here given by σ/ε or σ/2ε?
M is the middle of the side AB of the triangle ABC. Prove that CM = AB/2 only if the angle ∠ACB = 90°.
