At 5:00 a. m., the temperature outside was 6°F below zero. By noon, it rose by 15°F. At 7:00 p. m., the temperature dropped by 5°F. What was the evening temperature?

What is the product of the radical expression. (7-2square root) (8+2 square root)

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)