Is 4x+9=-9+7 true false or open

x = -11/4 = -2.750

Step-by-step explanation:

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    4*x+9-(-9+7)=0

Step by step solution :

Solving a Single Variable Equation :

1.1      Solve  :    4x+11 = 0

Subtract  11  from both sides of the equation :

                     4x = -11

Divide both sides of the equation by 4:

                    x = -11/4 = -2.750

One solution was found :

                  x = -11/4 = -2.750

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answer: 5

step-by-step explanation:

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.