1. -.6 or -3/5
2. -.4 or -4/9
Answer:
1:5.that is the answer I will send solution later
281.9 is the answer, but rounded it would be about 282
hope this helps, im not 100% sure
There are 6 different combinations of 2 books from the group of 4 that he could choose to do.
Let's say all of the books were letters.
Books a, b, c, and d.
Different combinations include:
ab, ac, ad, bc, bd, and cd.
7/28 as a decimal would be 0.28