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Rom4ik [11]
3 years ago
6

Lead metal can be extracted from a mineral called galena, which contains 86.6% lead by mass. A particular ore contains 68.5% gal

ena by mass. If the lead can be extracted with 92.5 % efficiency, what mass of ore is required to make a lead sphere with a
6.50cm radius?
Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
6 0

Answer:

ds hj bfsj gjhbyuabfdbsybfy

Step-by-step explanation:

sdbhabjbgfybsbfsad gfhysabfubdfr

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alexdok [17]
So assuming that the total =27
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4 0
3 years ago
4y-14=18. Hahahahahahahaahahaha
Setler [38]

Answer:

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5 0
3 years ago
Read 2 more answers
The cost of attending an amusement park is $10 for children and $20 for adults. On a particular day, the attendance at the amuse
Lapatulllka [165]

Using a system of equations, it is found that 10,000 children attended the park that day.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the variables are:

  • Variable c: Number of children in the park.
  • Variable a: Number of adults in the park.

The attendance at the amusement park is 30,000 attendees, hence:

c + a = 30,000, which is the first equation in matrix form.

Then:

a = 30,000 - c

The cost of attending an amusement park is $10 for children and $20 for adults. The total money earned by the park is $500,000, hence:

10c + 20a = 500,000, which is the second equation in matrix form.

Since a = 30,000 - c, we replace:

10c + 20a = 500,000

10c + 20(30000 - c) = 500,000

10c = 100,000

c = 10,000.

More can be learned about a system of equations at brainly.com/question/24342899

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8 0
2 years ago
F(x) has domain , and range
marta [7]
Domain: {-4, -2, 0, 2, 4}
range: {-2, -1, 0, 1, 2}
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2 years ago
Which figures are polygons
Tatiana [17]
The answer is A. A, D the reason being, is because polygons have sides C, and B have no sides so we can eliminate those immediately.
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3 years ago
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