Awire is first bent into the shape of a triangle. each side of the triangle is 4in long. then the wire is unbent and reshaped into a square. what is the length of a side of the square?

Ared balloon starts at 7.3 meters off the ground and rises at 2.6 meters per second. a blue balloon starts at 12.4 meters off the ground and rises at 1.5 meters per second. when will the balloons be at the same height?

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"