Answer:
5.8/8=0.725
Rounded number: 0.7
Step-by-step explanation:
Estimate 6/8=0.75
6 because 5.8 rounded to a whole number=6
angles of the triangle are equal 180
so 42+82=124
180-124=56
so the answer is 56
-3x - 7 is the furthest it can be simplified