Complex conjugate of 3+4i

In a rectangle, the ratio of the length to the width is 5 : 2. The length of the rectangle is 13.875 feet greater than the width. What are the perimeter and the area of the rectangle?

Simplify 0.75 (3.5a-6b)

Is 0.213211321113 rational or irrational

What is the unit rate of 5/8 square foot in 1/4 hour

Angles ∝ and β are the two acute angles in a right triangle. Use the relationship between sine and cosine to find the value of β if β < ∝. sin (2x + 2) = cos (3x + 8)

Mr. Horn had a sheet of plywood that measured 84 inches long and 65 inches wide. He sawed th sheet of plywood in half. What was the area of each sheet of plywood in square inches?

The graph of the function y = tan (x) was horizontally stretched so that it's period became 10 π. Which is the equation of the transformed function? A. y=tan (x/10) B. y = tan (x/5) C. y = tan (5x) D. y = tan (10x)

Natalie found a tennis ball outside a tennis court. she picked up the ball and threw it over the 12 foot fence into the court. the height of the ball, h, and time t seconds is given by the equation h (t) = - 16^2+18t+5.

Karen has n decks of cards. each deck has 52 cards in it. using n, write an expression for the total number of cards karen has.

What is the surface area of a cone with a lateral surface area of 25 square inches and a base diameter of 4 inches? (Use 3.14 as an approximation for π.)