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What is the best website for math answers?
Top 10 math help sites
- AskMe Help Desk (math category) This one allows for math notation in questions and answers.
- 6. Yahoo answers (Click on “Science & Mathematics”, then “Mathematics”).
- AOL Answers (math category)
- OpenStudy (math category) This one is quite new.
- Wolfram|Alpha.
- See the 30 Comments below.
How do you verify math answers?
The process of making sure a solution is correct by making sure it satisfies any and all equations and/or inequalities in a problem. Example: Verify that x = 3 is a solution of the equation x2 – 5x + 6 = 0. To do this, substitute x = 3 into the equation.
How do you double check in math?
If you had to add or multiply a series of numbers when you answered the problem, redo the calculation, but do it in reverse order. For example, if the problem required that you add 7+when you did the problem, add the numbers in order 7 when you double check your work.
How do you know if an equation has no solution?
The constants are the numbers alone with no variables. If the coefficients are the same on both sides then the sides will not equal, therefore no solutions will occur. Use distributive property on the right side first.
How can you tell if a point is a solution to a system?
If you are asked if a point is a solution to an equation, we replace the variables with the given values and see if the 2 sides of the equation are equal (so is a solution), or not equal (so not a solution). A solution to a system of equations means the point must work in both equations in the system.
Is the point a solution to the system?
The solution to a system of linear equations is the point which lies on both lines. In other words, the solution is the point where the two lines intersect.
How do you find the solution of two equations?
The Elimination Method
- Step 1: Multiply each equation by a suitable number so that the two equations have the same leading coefficient.
- Step 2: Subtract the second equation from the first.
- Step 3: Solve this new equation for y.
- Step 4: Substitute y = 2 into either Equation 1 or Equation 2 above and solve for x.
How do you tell if a system of equations has no solution or infinitely many?
A system of linear equations has one solution when the graphs intersect at a point. No solution. A system of linear equations has no solution when the graphs are parallel. Infinite solutions.
What is an example of no solution?
When a problem has no solution you’ll end up with a statement that’s false. For example: 0=1 This is false because we know zero can’t equal one. So, we say this problem has no solution. This means no matter what number you put in for the variable x, you will never get anything that equals one another.
What is the formula for no solution?
Case 2. If (a1/a2) = (b1/b2) ≠ (c1/c2), then there will be no solution. This type of equation is called an inconsistent pair of linear equations.
Is 0 0 infinite or no solution?
For an answer to have an infinite solution, the two equations when you solve will equal 0=0 . Here is a problem that has an infinite number of solutions. If you solve this your answer would be 0=0 this means the problem has an infinite number of solutions.
Why is 1 0 1?
In short, the multiplicative identity is the number 1, because for any other number x, 1*x = x. So, the reason that any number to the zero power is one is because any number to the zero power is just the product of no numbers at all, which is the multiplicative identity, 1.
What is the value of 0 by 0?
0/0 is undefined. If substituting a value into an expression gives 0/0, there is a chance that the expression has an actual finite value, but it is undefined by this method. We use limits (calculus) to determine this finite value.
What if an equation is 0 0?
0/0 is infinite. If we make another equation, 0/0=x, 0*x=0 so ANYTHING times zero is 0. So the answer is infinitely many answers.
How do you know if an inequality is all real numbers?
If the inequality states something untrue there is no solution. If an inequality would be true for all possible values, the answer is all real numbers.
What does 0 0 mean in a graph?
It mean the origin of the coordinates. Explanation. A graph on a plane has the y-axis and the x-axis. They meet at a point labeled 0 which is the starting point of all point. This point is the point with coordinate (0, 0) and it is referred to as the origin.
What does a positive slope look like?
What the Slope Means. A positive slope means that two variables are positively related—that is, when x increases, so does y, and when x decreases, y also decreases. Graphically, a positive slope means that as a line on the line graph moves from left to right, the line rises.
What does a graph look like when the slope is 0?
The slope of a line can be thought of as ‘rise over run. ‘ When the ‘rise’ is zero, then the line is horizontal, or flat, and the slope of the line is zero. The equation of a line with zero slope will not have an x in it. It will look like ‘y = something.
What graph has a slope of 0?
The slope of a line can be positive, negative, zero, or undefined. A horizontal line has slope zero since it does not rise vertically (i.e. y1 − y2 = 0), while a vertical line has undefined slope since it does not run horizontally (i.e. x1 − x2 = 0). because division by zero is an undefined operation.
What is a 1% slope?
1% as a decimal is 0.01 and hence the slope is 0.01. That means for a run of pipe of a certain length the rise must be 0.01 times the length. Thus for you example, since the length of the run is 80 feet which is 80 × 12 = 960 inches the rise must be 0.01 × 960 = 9.6 inches.
What do you do when the slope is 0?
The Graph Of A Zero-Slope Line Just take the standard linear equation (Y = mx + B) and drop off the X since there is no movement on the X-axis. This means that the equation is Y = 0X + b, or just Y = b once you’ve eliminated the X (since anything multiplied by zero is always zero).
What does it mean when the slope is 0?
A slope of zero means that there is a constant relationship between x and y. Graphically, the line is flat; the rise over run is zero.
What is the slope of the points?
The slope of a line characterizes the direction of a line. To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points.