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trasher [3.6K]
3 years ago
5

Summative practice

Mathematics
1 answer:
UkoKoshka [18]3 years ago
3 0

Answer:

the answer is written in the picture.

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If you were to solve the following system by substitution, what would be the best variable to folve for and from what equation?
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What Force would be needed to extend a spring with a spring constant k=7 N/m that extends<br>0.3m?​
vladimir2022 [97]

Answer:

Force  =  - 2.1 Newton

Step-by-step explanation:

According to question ,

The value of Spring constant , K = 7  N/m   Newton per meter

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<u>The principal state that , the force applied on spring to extend or compress the spring to some distance is proportion to that distance. </u>

Let the force be F

So, F =  - K X

where K is spring constant and X is its displacement

Negative sign shows displacement of spring once it is stretched

And K is spring constant

So ,Force = ( - ) 7 × 0.3

I.e Force  =  - 2.1 Newton       Answer

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3 years ago
Tash conducted a survey of the students in her school.
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The total number of students in the school is 750. You can use algebraic equation to calculate the number of the students. Let x be the total number of students in the school. Hope this helps.

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