Ni : Zn: Cu = 7:2:9 =7x : 2x : 9x
7x+2x+9x = 3.8
18x=3.8
x=3.8/18=1.9/9≈0.21
Ni: 7x=7*0.21=1.47 ≈1.5 kg
Zn: 2x=2*0.21=0.42≈0.4 kg
Cu: 9x=9*0.21=1.89 ≈1.9 kg
Check 1.5+0.4+1.9 =3.8 True
Answer:
30 more
Step-by-step explanation:
hope it helps friend.
Divide actual distance by the distance of the scale miles
39 miles / 13 miles = 3
Multiply that by the scale inches:
2 inches x 3 = 6 inches.
The answer is 6 inches.
Answer:
what's the question?
Step-by-step explanation:
Answer:
dont know if this is correct
