Question

Don’t answer unless you’re 100% sure
Also, explain how you also got the answer.

Answer 1

a ( copper and nickel

b ( 1034.9

Explanation:

Add all the values of melting points

2,651 + -37.89 = 2613.11

2613 + -458 = 2155.11

2155.11 + 1984.32 = 4139.43

Divide the number by the number of numbers: 4139.43/4 = 1034.8575

1034.8575 rounded to the nearest tenth is 1034.9, thats how you find the mean, or the average.