Part (a)
<h3>Answer:

</h3>
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Explanation:
Multiply by 1000 to go from km to meters.
This is because 1000 m = 1 km.
Multiplying by 1000 in scientific notation means we add 3 to the exponent 5. The 3 is because 1000 = 10^3.
So the
becomes 
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Part (b)
Answer in standard form: 960,000 seconds
Answer in scientific notation: 
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Work Shown:


To go from the scientific notation to standard form, move the decimal point 5 spaces to the right. The 5 is from the exponent.
It would be B) 6 cm. If you construct the triangle, and add the angle measure of 80 + 50= 130 , and then 180- 130= 50, you see that the triangle is isosceles.

We have two points:

The point slope form of the line:

substitute

Answer:
