3+2i/6+5i simplify using i

- i

Step-by-step explanation:

Given

Rationalise the denominator by multiplying the numerator/ denominator by the conjugate of the denominator

The conjugate of 6 + 5i is 6 - 5i, thus

= ← expand numerator / denominator using FOIL

= → simplify using i² = - 1

=

=

= - i

b.) 160 miles on a 5 gallons car

step-by-step explanation:

240/10=24 miles/gallon

160/5=32 miles/gallon

30/1=30 miles/gallon

168/6= 28 miles/gallon

32 miles/gallon is the most amount, so this is the best.

stops on an even number.