Write the sum or difference in the standard form a + bi.

(4 - 2i) + (9 + 6i)

A rectangle has side lengths (2x-5) meters and (2x+6) meters. write and simplify an expression to represent the perimeter of the rectangle

12) Beginning with the quadratic equation y = ax2 + bx + c, Fred calculated and then plugged that number in for x to get a y.

Solve for x ... 5x+18=45

A jar of mayo is shaped like a cylinder. The radius of the jar is 1.5 I Chen's and it's height is 7 inches. The mayo sells for0.08$ per cubic inch what is the cost of the mayo

How much water is in an empty glass that is 10cm high and has a diameter of 5cm

What is the solution to this equation? 3x - x+8+5x-2=10

Express each of the following as a fraction in lowest terms 1: 3/6 2: 2/8 3: 12/20

Randi earned a profit of $60.00 on her last snow shoveling and salting job. Write an equation that can be solved to find how many hours Randi spent shoveling and salting to earn a profit of $60.00. HINT: Randi charges $25 an hour to shovel and salt.

The lengths of the sides of a triangle are 4, 5, 6. Can the triangle be a right triangle?

Name a big reason Europeans came to the "New World" during the fifteenth and sixteenth centuries?