Please help these are my last two questions! 17. Write the sum of the two vectors as an ordered pair. (7,-5) and (4, 4) A.(-1, 11) B.(3, -1) C.(11, -1) D.(-1, 3)

19. (2,7) (0,0) (3,-2) What is the resultant of the two vectors shown above? A. (9, 1) B.(1, -9) C.(-1,9) D.(5, 5)

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

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?

What is the sum of the first 8 terms of the geometric series