Tom wants to place a photograph that is 8.5 inches wide on his science fair poster. his poster board is 21.25 inches wide. how far from each edge should he place the photograph if he wants it to be centered

What percent of the circle below is shaded?

You and a friend went to the movies.you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).