x = 2 or x = 2/5
There are 2 unknowns
If: 2^x2 +5x = k Then: 2x^2 +5x -k = 0 Using and solving the discriminant: k = -3.125 Using and solving the quadratic equation: x = -1.25 Check: 2(-1.25)^2 +5(-1.25) = -3.125
In the equation 5t = 25, t is simply a variable that you are solving for. You can replace "t" with a variable you are more comfortable with, such as "x", leaving you with 5x = 25. The equation means: 5 times what equals 25? To get this, you would divide both sides of the equation by 5, leaving it as (5t)/5 = 25/5. The 5 on in the denominator and numerator on the left side of the equation would cancel out, leaving you with t = 25/5, which you can simplify to t = 5.
6The line of best fit has the equation = -3 + 2.5x. What does this equation predict for a value of x = 3?Answer: 4.5
x = sqrt 100
Because when your solving a quadratic equation your looking for x-intercepts which is where why equals 0 and x equals what ever the answer is.
Yes, one equals one. If you get that when solving an algebraic equation, the equation is true for all real numbers.
the first step in solving the equation is to subtract the nine from the three. you will get negative 6.
Solving a one variable linear equation involves getting the variable on one side of the equals sign by itself. To do this one uses the properties of numbers.
Solving for d: d = -4.7 satisfies the equation.
If you are solving for y, it is fine. If you are solving for x, divide both sides by x and the equation should be x = y/x
80
There are 2 unknowns
Solving the equation for "y" gives you the slope-intercept form.
Subtract 1 form both sides of the equation
Isolating a single variable in terms of the rest of the equation provides a solution to that variable. That is, if you know the equation that equals the variable, then you can figure out its value.
Solving tne simultaneous equation gives x = 19.8 and y = -2.2