Ruth is solving 14 × 23.
Her friend stops her after her first step and asks her why she wrote what she did.

Complete the sentences to explain Ruth’s work.

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

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?