Amaple tree is 4.2 meters tall. a pine tree is 1.02 shorter that the maple tree. an oak tree is 1.89 taller than the pine tree . how tall is the oak tree?

Eric drew a scale drawing of a country park. the scale he used was 1 inch = 2.5 yards. the picnic area is 80 yards wide in real life. how wide is the picnic area in the drawing ?

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

9/10 divide by -3/15 as a mixed number