78 pages in 2 notebooks = 39 pages in ? notebooks

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?