−x is 8 units to the right of 0. Use the drop-down menus to complete the statement about x.
1 answer:
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Answer:
- <em><u>Given </u></em><em><u>,</u></em>
student's age = x years.
- <em><u>Also </u></em><em><u>,</u></em>
Teacher's age = 2x + 6
- <em><u>And </u></em><em><u>,</u></em>
Principal's age = 3x + 10
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Difference between ages ,
therefore ,
second option is the correct answer.
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We are asked to find ratio of two relative intensities. Let's start by rearranging formula for R:
For air-raid siren we have:
For jet engine noise we have:
To find out <span>many times greater is the relative intensity of the air-raid siren than that of the jet engine noise we need to divide these two numbers:
</span>tex] \frac{R_{1}}{R_{2}} = \frac{10^{15}}{10^{12}} =10^{3}=1000[/tex]
For air-raid siren we have:
For jet engine noise we have:
To find out <span>many times greater is the relative intensity of the air-raid siren than that of the jet engine noise we need to divide these two numbers:
</span>tex] \frac{R_{1}}{R_{2}} = \frac{10^{15}}{10^{12}} =10^{3}=1000[/tex]