Answer:
They jump at the same height.
Step-by-step explanation:
.8 meters=2.62467 ft
80cm=2.62467 ft
6
The answer is -4x^2
-3x^2 - 5x^2 + 4x^2
= -3x^2 + -5x^2 + 4x^2
Combine like terms:
-3x^2 + -5x^2 + 4x^2
(-3x^2 + -5x^2 + 4x^2)
= -4x^2