<span>it is 400,000 because it says about so we have to round so 0 is little so the 4 stay's the same</span>
Answer:
sine 70 = opposite / hypotenuse
sine 70 = 12 / x
x = 12 / sine 70
x = 12 / 0.93969
x = 12.7701688855 cm
x = 12.8 cm (rounded to nearest tenth.
Step-by-step explanation:
the first one
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Step-by-step explanation:

Reduce the numbers with the greatest common factor 4

Just multiply, To multiply the fractions , multiply the numerators and denominators separately


That's the answer 3/10 or 0.3