Simplify: (7+4i) + (-4+5i) + (4+7i)

a) 15+6i

b) 3+9i

c) 7+16i

d) - 1+2i

Express 240 as a product of its prime factors.

The plumber finished 3 jones on tuesday. the first two only cost the owner the $45 trip fee because they took very little time to complete. for the third job, the plumber charges the trip fee plus 6 times his hourly rate.

A ladder 40 long leans against a buliding and reaches a ledge, the foor of the ladde is16 feet from the building. how high is the leadge

Share £60 in the ratio a 2:1

Put the fractions 3/4, 7/8, and 1/2 in order from least to greatest

What is the simplified form of - 8y+20 but I only 1 as the coefficient of y

What number is 100,000 more than 75,000 and explain how u got answer

3 times a number decreased by 40 equals 14

An exceptionally bright high school student has applied for two scholarships: a merit scholarship and an athletic scholarship. He estimates the following probabilities: The probability of getting the merit scholarship is 0.

A boy bought 9 new cards to add to his card collection of 25 cards. The next day his dog ate half of his collection. How many cards does he have left?