3 years ago

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

Mathematics

1 answer:

Zielflug [23.3K]3 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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