Answer:
15
Step-by-step explanation:
Down Below .
A. Nickel and Copper.
B. The average temp is 1034.8575. I got that by adding all the temps then dividing it by 4
2nd graph above the one you chose
4
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40
a = -5
15 - a = 20
Move the constant of 15 to the other side by subtracting it.
-a = 5
Divide by -1 to make a positive.
Check.
15 - (-5) = 20
15 + 5 = 20
20 = 20
none
first thats not a number
