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dimulka [17.4K]
4 years ago
14

Write the measure -128 30’ 45’’ as a decimal to the nearest thousandth

Mathematics
1 answer:
Zielflug [23.3K]4 years ago
6 0

Answer:

-127.488°

Step-by-step explanation:

45" is 0.75 of 1', so -128° 30' 45" = -128° 30.75'

Next:  30.75' is 30.75/60 of 1°, and or -128° plus 0.5125 of 1°.

The final answer is found by adding 0.5125° to -128°:

 -128.0000°

 +   0.5125°

--------------------

 -127.4875

To the nearest thousandths of a degree, that would be -127.488°

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