Mathematics: An alloy is composed of nickel, zinc, and copper in a 7: 2: 9 ratio. how many kilograms of each metal is needed to make 3.8 kg of this alloy?

An alloy is composed of nickel, zinc, and copper

Ответ:

ijohnh14

13.03.2022

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

0,0(0 оценок)

Ответ:

erick6785

19.07.2021

Mathematics

I got 72 only be
cause i looked it up.

0,0(0 оценок)

Ask your question to the AI advisor

Ai-bot is an expert in any field and is the perfect companion for reliable and useful answers and advice on a variety of topics, including science, history, technology, art, sports, health, culture and more.

Ask your question

An alloy is composed of nickel, zinc, and copper in a 7: 2: 9 ratio. how many kilograms of each metal is needed to make 3.8 kg of this alloy?

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question