Hannas water bottle had 7/8 gallon of water she drank 5/6 gallon witch equation shows the fraction of a gallon of water that is left in the bottle

What is the order of operations for 2 + (3 - 9) ÷ -3 · 4 in number order 1. subtraction 2. division 3. addition 4. multiplication

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i