Complex conjugate of 3+4i

For which real numbers x and y is it true that x + y = x+y?

The sum of three numbers is 123. the second number is 9 less than two times the first number. the third number is 6 more than three times the first number. find the three number

Find the fourth roots of 81 (cos 320° + i sin 320°). Write the answer in trigonometric form.

What is 3 (x+7) in expanded form?

Simplify each expression. (fractions) a) - 4/5+3/10 b) 2 5/8-1 1/3

A chess club with 55 members is electing a new president. Lucy received 33 votes. What percentage of the club members voted for Lucy?

Simplify - 9 (1-10n) - 2 (3n+9)

what will the total value of an investment of $5000 be if it has an interest rate of 7% and is invested for 20 years

Mrhopkins was making groups for the school field trip

Ethan will be going on a study tour to England in a week. which currency should he use while in England?