Find the exact value of : cos (2 arctan (4/3))

If m∠A + m∠B = 88° and m∠A + m∠B + m∠C = 150°, which property of equality will you use in the first step to find m∠C?

Tyler is writing a coordinate proof to show that a diagonal of a rectangle divides the rectangle into two triangles that have equal areas. He starts by assigning coordinates to a rectangle.

A & B share the cost in a ratio of 3:2. A pays £125, how much does B pay?

What is the center and radius of the circle (x + 4) 2 + (y + 6) 2 = 64?

How to solve this problem F + 3pi equals 12 pi

The sum of the measures of the interior angles of a polygon is 2880°. How many sides does the polygon have?

What is the slope of the line through (6,9) (6,9) left parenthesis, 6, comma, 9, right parenthesis and (7,1) (7,1) left parenthesis, 7, comma, 1, right parenthesis?

Elizabeth has 87.75 feet of banner paper how many banners can she make that are 11.25 feet long?

The mean score of a college entrance test is 80; the standard deviation is 15. the scores are normally distributed. what percent of the students scored below 50?

Khan academy creating box plots