What is the estimate of the sum of 5/12 and 7/8?

You draw a card at random from a deck that contains 33 black cards and 77 red cards.

Suppose you are analyzing the relationship between time and distance given in a table,and there are 4 values for each quantity.you divide distance 2 minus distance 1 by time 2 minus time 1.you then divide distance 4 minus distance 3 by time 4 minus time 3 and get a different answer.what can you say about the relationship?

Which expression has a negative value? 2+12 (-) ) -35-5