Find the sum of – 6+9i and its complex conjugate.

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?

Devaughn's age is three times sydney's age. the sum of their ages is . what is sydney's age?

When a whole number is multiplied by 104, how does the placement of the decimal point change? a. it moves ten places to the right. b. it moves four places to the left. c. it moves ten places to the left. d. it moves four places to the right.