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Vitek1552 [10]
3 years ago
10

A blacksmith blends one alloy of silver that is 35% silver and another that is 95% silver. To the nearest ton, how much of the a

lloy that is 35% silver is needed to make 139 tons of a 70% silver alloy? ​
Mathematics
1 answer:
hammer [34]3 years ago
5 0

Answer:

Let x be the unknown quantity of 50% silver.

Look at the silver concentrations...   This will be 0.5x of actual silver,

Added to 5% silver in 500g or 0.05(500)g of actual silver

Totaling to (500+x)g of 20% silver which will have 0.2(500+x)g of silver

 

Your equation is:

 

0.5x + 0.05(500) = 0.2(500+x)

 

Solve for x to find the grams of 50% silver used

 

Step-by-step explanation:

sana maka tulong po sorry po kung mali

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A standard clock has a 1-cm hour hand and a 2-cm minute hand. At 12 pm, they are both pointing in the same direction and the dis
Levart [38]

Answer:

The distance between the hands is √(3)cm ≈ 1.73cm.

Step-by-step explanation:

In a standard clock, the angle between every number is 30°, therefore the angle between 12 and 2 will be 30° x 2 = 60°.

Looking at the diagram, to find c we can make use of our cosine formula

c² = a² + b² –2abCos(C°)

a = 2, b = 1 and C° = 60°

Therefore we have:

c² = 2² + 1² –2 x 2 x 1 x cos(60°) =

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c = √(3) ≈ 1.73

Therefore, the distance between the hands is √(3)cm ≈ 1.73cm.

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2 years ago
Branliest offered<br> solve the proportion<br> 12/x=6/7<br> 6x/4=8/12<br> 7/x+13=4/12<br> y+5/y=10/8
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What is 90/70<br> Simplified
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As an improper fraction, the simplified answer would be 9/7 after you divide both top and bottom by 10

------------------------

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Answer:

8

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