Find the complex number (a+bi) that when added to (4-2i) equals (-2+12i)

Let the unknown number = X

Now we have X +(4-2i) = (-2+12i)

Subtract (4-2i) from both sides:

X = (−2+12i) - (4-2i)

X = -6+14i

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

i think that you should ask google for the answer to that problem because if we don't know it google does