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What are some good step-by-step math problem solvers?

Cymath.com is a simple and intuitive math problem solver capable of solving algebra and calculus problems. The site formats each problem as you type and then provides a step-by-step solution using standard math terms and formulas. It also shows how to check the answer and provides a link to the solution. Cymath solves problems very quickly without any clutter and is also available as an app on the iPhone or through Google Play.\nCymath.com was designed directly for students and features several other educational tools, as well. In addition to the problem solver, the site has a practice section..

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What are some examples of parallelograms seen in everyday life?

There are many shapes that can qualify as being parallelograms. A rectangle is a parallelogram with all four interior angles measuring at 90 degrees. A rhombus is a parallelogram with all four sides being equal in length. A square is a parallelogram with all four sides equal in length and all interior angles measuring 90 degrees. A quadrilateral is considered a parallelogram if it fits three criteria. Both pairs of opposite sides must be parallel. Both pairs of opposite sides are congruent. If they are congruent, they will also be parallel. One pair of opposite sides are congruent and parallel..

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How do you use a formula for angles in a triangle?

If the only quantities you know are angles, the triangle cannot be solved because you need to know at least one of the sides. The equation for the Law of Cosines is c^2 = a^2 + b^2 - 2abcos(C). By substituting the values for the sides and taking the inverse cosine, you can derive the angle opposite side c and proceed from there. C is usually the longest side, but not always. As an example, assume you have a triangle with sides 3. 4 and 5. Substituting these values yields 5^2 = 3^2 + 4^2 - 2(3)(4)cos(C), or 25 = 9 + 16 - 24cos(C). By solving and taking the inverse cosine, you can determine tha..

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What are some good activities to help children learn division?

The grouping model is only one way to visualize division. Manipulatives can also be placed in one pile, and students can subtract the same number of items repeatedly until none are left or there is a remainder. They can also arrange the manipulatives into a pattern array to visualize equal size groups. Creating a 6-by-6 grid from Skittles shows 36 can be divided by 6 six times. Or, it can show it creates three groups of 12 or two groups of 18.

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What is the inverse of an exponential function?

While an exponential function denotes multiplying a number to a certain exponential power, a logarithm function denotes the exponent to which a base must be raised to produce a number. For example, because five to the third power is equal to 125, the log of three to the base of five is equal to 125.

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How do you find the greatest common factor?

List the factors of each numberWrite the numbers so that one number is on top of the others. Make a vertical line to the right of the numbers. For each number, list its factors starting with the smallest factor. Factors are numbers that equal a whole number when they are divided into the original number. The numbers 3, 9 and 18 are factors of 18. Find the shared factorsDetermine which factors the numbers share, then circle the common factors.Choose the largest factorDetermine which common factor is the largest. This is the greatest common factor. To find the greatest common factor of the numbe..

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What is the formula used to calculate pipe weight?

The weight-per-foot of a 4-inch steel pipe with an outside diameter of 4.5 inches and wall thickness of 0.237 is calculated as follows: m = 10.68 ((4.500 in) - (0.237 in)) (0.237 in), m=10.79 lbs/ft. The weight, wp, of an empty pipe per unit length (kg, lb) is given by wp = ρm Am\n= ρm (π (do / 2)2 - π (di / 2)2) \n= ρm π (do2 - di2) / 4\nThe weight of liquid in a pipe per unit length is given by:\nwl = ρl A \n= ρl π (di / 2)2\n= ρl π di2 / 4.\nThe weight of a pipe and the liquid in it per unit length is given by wp + wl.

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What number has a tens digit that is eight more than the ones digit?

The ones digit and tens digit are both examples of place values. Each column in a number to the left or right of the decimal has a place value. If there is a one in the tens column, it represents one set of 10. Likewise, if there is a two in the hundreds column, it represents 2 sets of 100, or 200 total.

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What is the perpendicular bisector theorem?

As its name suggests, a perpendicular bisector intersects a line segment in a right angle and in such a way that it cuts the line segment into two equal parts. The theorem is often mentioned in similar theorems and laws of analytic geometry, particularly in triangles and circles. For triangles, the perpendicular bisectors of the three sides of the triangle intersect at a common point that is equidistant to the three vertices. In circles, the theorem may be used to pinpoint the location of the center by choosing three random points on the circle and connecting these points with line segments. T..

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How do you find the area of a triangle?

Determine the base \nPick one side of the triangle, and determine its length. This is the base.\nDetermine the height\nMeasure the perpendicular distance from the base to the vertex opposite it. This is the height. \nMultiply base by height\nMultiply the base of the triangle by its height.\nFind the area\nUsing the formula for finding the area of a triangle, divide the product of base and height by 2. If the base is 4 centimeters and the height is 5 centimeters, then the area is (4 x 5)/2, or 10 square centimeters. \n

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