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
If x squared equals n, then x is the square root of n.
True
2x + 6y = 93x - 12y = 15Chose the second equation because you can simplify it.3x - 12y = 15 divide by 3 to both sidesx - 4y = 5 add 4y to both sidesx = 4y + 5Replace 4y + 5 for x to the first equation.2x + 6y = 92(4y + 5) + 6y = 98y + 10 + 6y = 914y = -1y = -1/14x = 4y + 5x = 4(-1/14) + 5x = -2/7 + 5x = -2/7 + 35/7x = 33/7
To solve the equation x^2 = n, you would take the square root of both sides to isolate x. This would give you x = ±√n, where the ± symbol indicates that there are two possible solutions, one positive and one negative. Therefore, the best way to solve this equation is to take the square root of n and include both the positive and negative roots as solutions.
It depends on which variable you wish to solve for.
Take the square root of both sides of the equation
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64x = 37 Divide both sides by 64: x = 37/64 or 0.578125
You cannot go beyond x = k unless you know the value of k. And in that case, the equation is solved so there is nothing further to do!
X2 = k Take square root each side. X = (+/-) sqrt(k) ============
15
Which of the following is the best translation of this equation?
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
The best plan for that particular equation would be to first subtract 15 from each side, and then apply the quadratic formula.
If x squared equals n, then x is the square root of n.
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