Ted knows that a rational number can be written as a ratio of two integers as long as the denominator is not zero. He thinks π is a rational number, because 22/7 fits the definition. Explain why Ted is wrong.

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.