Answer:
- 914.4 mm
- 0.0479594 km
Step-by-step explanation:
For units conversion, use a conversion factor ratio with the units you do want in the numerator and the units you don't want in the denominator. The numbers in the numerator and denominator give the ratio a value of 1: the numerator is equal to the denominator--just in different units.
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1. For feet to mm, you need a couple of additional conversion factors besides the ones shown:
1 foot = 12 in
1 cm = 10 mm
So, the conversion is ...

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2. The additional factor you need for this problem is ...
1 mile = 5280 feet
So, the conversion is ...

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<em>Additional comment</em>
You can use Google to do units conversion by typing "3 feet to mm" or "157 feet to km". However, the conversion factor for the latter will be more exact than the one given in this problem. Hence the Google answer to the second question will not be applicable here.
Its an equation that helps you find the hypotenuse of a right triangle
c= √( a²+b²)
It is -4/9 because the slope is the same when lines are parallel. The y is what is different in the equation
Yeah it’s defiantly then first but maybe
You didn't clarify what the angle is needed for, but still, I'd say never.
If you know two sides of a right triangle you can always find the third using the pythagorean theorem.
Once all sides are known, you can find the three angles: one is surely right, since you have a right triangle. The other two can be found using the sine law.