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kicyunya [14]
4 years ago
6

Which table shows a proportional relationship?

Mathematics
1 answer:
ZanzabumX [31]4 years ago
8 0
The 3rd one because if you subtract them they all would be equal to eachother

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There are 20 children at a library. Six of the children have an average age of 5 years. The remaining children have an average a
Allushta [10]
Answer: The average age is 7.1 years.

This problem is an example of when we need to take a weighted average. We simply can't just find the average of 5 and 8, because there are different children of each each.

To start, lets multiply the total number of children by their individual ages.

6 x 5 = 30 years
14 x 8 = 112 years

There are 142 years among the 20 years, so divide 142 by 20. This gives us an average age of 7.1 years.
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What is the solution to the inequality
Artemon [7]

Answer:

x>20/3

Step-by-step explanation:

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3 years ago
What is ten to the power of negative seven written as a number?
Ksenya-84 [330]

Answer:

0.0000010

Step-by-step explanation:

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5 0
4 years ago
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Why would using a net and needing to know how to calculate surface area be an important part of designing a three-dimensional ob
son4ous [18]

Answer:

A net is a pattern made when the surface of a three-dimensional figure or solid is laid out flat showing each face of the figure. It is then possible to use the net to calculate the surface area of the solid. Surface Area of a Cube using Nets. A cube is a three-dimensional figure with six matching square faces.

Step-by-step explanation:

hope it helps

4 0
4 years ago
Which equation has a graph that is a parabola with a vertex at (–1, –1)?
Artist 52 [7]

Answer:

y=(x+1)^2-1

which agrees with the last option listed.

Step-by-step explanation:

We use the vertex form of a parabola:

y-y_v=a(x-x_v)^2

which with the information we have becomes:

y-y_v=a(x-x_v)^2\\y-(-1)_v=a(x-(-1))^2\\y=a(x+1)^2-1

Therefore the equation that corresponds to such vertex (-1, -1) is the last one listed among your given answer options.

y=(x+1)^2-1

3 0
3 years ago
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