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What values of x are solutions of 3x2 11x 20?
If you mean: 3x squared -11x -20 = 0 Then: x = -5 or x = 4/3
What does solutions mean in math?
An open statement is a sentence that contains a variable , such as x. The solution set for an open sentence is the set of values that when substituted for the variable make a true statement. The members of the solution set are called solutions. Examples: x = 2. Solution set is {2} solution is 2. x2 - 5 = 4 Solution set is {-3, 3 } solutions are -3 and 3. x > 0 Solution set = {x " x > 0 } That is all positive numbers. Every positive number is a solution. There are some finer points that I did not mention such as the possibility of more than one variable and limitations on the values that allowed in the substitutions.
In a regression analysis if the mean value of y is related negatively of the value of x then larger values of x is associated with?
If the value (not mean value) of y is related negatively to the value of x then larger values of x are associated with smaller values of y.
What is the set of all x values?
It could be the x-axis.
What does it mean to find the value of x?
Given a situation, what are the possible values of X is what it is asking.
What values of x are solutions of 3x2 11x 20?
If you mean: 3x squared -11x -20 = 0 Then: x = -5 or x = 4/3
X with a line over it?
The symbol "X" with a line over it is often used in mathematics to represent the average or arithmetic mean of a set of values. It is calculated by adding up all the values and dividing by the number of values in the set.
What are all the values that mean x bar can possibly take?
It can take any value between the maximum and minimum observed values.
What are 3 other names for solutions of a quadratic equation?
Roots, zeroes, and x values are 3 other names for solutions of a quadratic equation.
What does solutions mean in math?
An open statement is a sentence that contains a variable , such as x. The solution set for an open sentence is the set of values that when substituted for the variable make a true statement. The members of the solution set are called solutions. Examples: x = 2. Solution set is {2} solution is 2. x2 - 5 = 4 Solution set is {-3, 3 } solutions are -3 and 3. x > 0 Solution set = {x " x > 0 } That is all positive numbers. Every positive number is a solution. There are some finer points that I did not mention such as the possibility of more than one variable and limitations on the values that allowed in the substitutions.
What does define mean in math terms?
The mean is sometimes also known as the arithmetic average. For a finite number of observations, it is he sum of their values divided by the total number. It can also be described as the expected value of a variable. If a discrete numerical variable X can take the values x, then the mean is the sum [x*pr(X = x)] where the summation is over all possible values of x. For a continuous variable, replace the summation by integration.
What are you finding when you solve a quadratic equation?
You are finding the roots or solutions. These are the values of the variable such that the quadratic equation is true. In graphical form, they are the values of the x-coordinates where the graph intersects the x-axis.
What does it mean to solve an equaton?
To find the x or x's values
What do range values mean in equations?
The range of a function (or equation) is the set of all Y values it reaches. For example, Y = X+2 would reach all real values of Y over the course of all X values. However, Y = X2 would have a range of Y greater than or equal to 0 because no matter what value of X is put in, Y will never be negative. MORE ANSWER...Equations are input and output. Your input value is x, the output value is y. All allowd values of x create an output in y. The x inputs are the "domain values", the y outputs, as a result of x are the "range" values.
How do you find the mean of frequency distributions?
For discrete distributions, suppose the variable X takes the specific value x with probability P(X=x) Then add together x * P(X = x) for all possible values of x. For continuous distributions, suppose the probability distribution function of the variable X is f(x). Then the mean is the integral of x*f(x) with respect to x, taken over all possible values of x.
How do you compute one sigma deviation?
Let x denote the values of the variable in question. Suppose there are n observations. Let Sx = the sum of all the values. then the mean of x, Mx = Sx/n Let Sxx = the sum of all the squares of the values. The Vx (= the variance of x) is Sxx - (Mx)^2 and sigma(x) = sqrt(Vx). Therefore one sigma deviation, relative to the mean, = Mx - sigma(x), Mx + sigma(x).
Which values are solutions to the inequality x2 is more than or equal to 11?
x ≤ -sqrt(11) or x ≥ sqrt(11)
