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tensa zangetsu [6.8K]
2 years ago
15

Brass is an alloy formed using copper and zinc in the ratio 3:2 based on weight. If 120g of copper are needed for a certain piec

e of brass, how much zinc is needed?
PLEASE HELP!!
Mathematics
2 answers:
OLga [1]2 years ago
6 0

Answer:

80g of Zinc will be needed with 120g of Copper

Step-by-step explanation:

icang [17]2 years ago
3 0
Hey There :)

We can solve by 2 ways ( The 2nd way might be easier )

→ To make 1 brass alloy, the ratio of copper to zinc is 3 : 2
Brass = copper + zinc
          =       3     :    2
                   3x   :    2x
   
Copper needed is 120g
    ↓
3x = 120g
Divide by 3 to isolate x
\frac{3x}{3} = \frac{120}{3} 
x = 40

Ratio of Zinc is 2

substitute 40 in place of x
2x = 2 ( 40 ) = 80g

Or 

→ 3     :    2
     120 :    p

Cross multiply
3p = 120 x 2
3p = 240
\frac{3p}{3} = \frac{240}{3}
p = 80g

80g of Zinc will be needed with 120g of Copper

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2 years ago
Boston , Massachusetts, and buffalo, New York, are hit by snowstorms that last 3 days . Boston accumulates snow at a rate of 1.5
stich3 [128]

Question is ;

Complete question is;

Boston , Massachusetts, and buffalo, New York, are hit by snowstorms that last 3 days . Boston accumulates snow at a rate of 1.5 feet every 36 hours. Buffalo accumulates snow at a rate of 0.01 inches every minute.

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Answer:

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Step-by-step explanation:

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Thus, In 72 hours, Boston would have accumulated; (1.5 × 72)/36 = 3 feet of snow.

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2 years ago
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8 0
3 years ago
Find the value of x. If necessary, round to the nearest tenth
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3 years ago
Read 2 more answers
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