Resuelve las siguientes ecuaciones
1. 2+5x=4x+7 2. 4x-5=1+3x
3. 8-5x-4=-6x+6 3. 4x+8+2x=5x-1

ayudadme porfavor

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Write the rational number in lowest terms 99/-15

The graph of a hyperbola is shown. what are the coordinates of a vertex of the hyperbola? (0, −4) (−3, 0) (0, 0) (0, 5)