Here are six number cards -7, -5, -3,3,1,-1 arrange these cards into three pairs with the same total

The sum of all of the cards is -7 + (-5) + (-3) + 3 + 1 + (-1) = -12 which means that each pair must have a sum of -12 / 3 = -4. This means that the pairs are -7 and 3, -5 and 1, and -3 and -1.

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm