Divide by rationalizing the denominator. 3+5i/10+3i

A. 25+47i/109
B. 60-18i/109
C. 100-30i/109
D. 45+41i/109

D

Step-by-step explanation:

Multiply the numerator and denominator by the conjugate of the denominator.

Note that i² = - 1

The conjugate of 10 + 3i is 10 - 3i , then

← Expand numerator/denominator using FOIL

= ← simplify

=

= → D

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

1/3

step-by-step explanation:

to find this, you can divide 12 by 4 which is 3 or you can multiply 4 until you reach 12 (4x3=12). both should give you 3, meaning theres three times less bananas than there are oranges.