Question: x = 2y2 +3 if x = 53 what NEGATIVE value of y makes this an equality
Answer:
x= 2y2 + 3
53 = 2y2 + 3
53 - 3 = 2y2
50/2 = y2
25 = y2
Take the Square Root of Both sides so we can get:
y = Square root of 25
so:
y = EITHER 5 or -5
Then the ANSWER is -5 (since we need the NEGATIVE Value of Y)
Without an equality sign and not knowing the plus or minus values of the given terms it can't be considered to be an equation.
Yes, you can divide both sides of an equation by a negative number, but it is important to remember that this action will reverse the inequality if the equation involves one. For example, if you have an inequality like ( x > y ) and you divide both sides by a negative number, the inequality changes to ( x < y ). In the case of an equation, however, the equality remains valid.
When the coefficient of that variable, in which you want to eliminate, is negative.
both, variables can be anything
Not sure that you can slove anything. -2w = r + s is one linear equation in 3 unknown variables. You need three independent equations in 3 variables to be able to solve them.
Without an equality sign and not knowing the plus or minus values of the given terms it can't be considered to be an equation.
An equation with absolute values instead of simple variables has twice as many solutions as an otherwise identical equation with simple variables, because every absolute value has both a negative and a positive counterpart.
Without an equality sign the expression given can't be considered to be an equation. But if you mean: x-2y = -4 then y = 0.5x+2
Yes, you can divide both sides of an equation by a negative number, but it is important to remember that this action will reverse the inequality if the equation involves one. For example, if you have an inequality like ( x > y ) and you divide both sides by a negative number, the inequality changes to ( x < y ). In the case of an equation, however, the equality remains valid.
When the coefficient of that variable, in which you want to eliminate, is negative.
both, variables can be anything
There can be. It depends on the variables.
Discrete variables must be countable and not negative. So no a negative number must be a continuous variable.
By calculating the discriminant of the equation and if it's negative the equation will have no solutions
Not sure that you can slove anything. -2w = r + s is one linear equation in 3 unknown variables. You need three independent equations in 3 variables to be able to solve them.
The given terms can't be an equation without an equality sign but a negative parabola opens down wards whereas a positive parabola opens up wards.
Negative