Answer :

annabanana08050

Answer:

Part A.) i would say nickel and copper

Part B.) 1,034.8

Step-by-step explanation:

A.) i would say copper and nickle because they are closest in value

B.) to find the average you add all the numbers then divide them by the amount of numbers:

For example if you have 1, 3, 5 & 8

you would add 1 + 3 + 5 + 8 which equals 17

then you divide 17 by 4 which equals 4.25

Hope This Helps!!

bushmichael422

Answer:

1.) Helium and Mercury

2.) 1,034.9

Step-by-step explanation:

2,651 + 1,984.32 = 4,635.32 + (-458) = 4,177.32 + (-37.89) = 4,139.43 ÷ 4 = 1,034.8575 ≈ 1,034.9

Hope this helps!  Thanks!

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