Explain why you add to find the sum of two negative integers, but subtract to find the sum of a positive and a negative integer. use a number line or counters in your explanation

The clayton family’s pool has vertices at the coordinates (0, 2), (0, 5), (2, 5), (2, 6), (5, 6), (5, 1), (2, 1), and (2, 2). if each grid square has an area of 9 square feet, what is the area of the pool?

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?