20% of the sevenths grade students have math class in the morning.16 2/3 of those students also have science class in the morning. If 30 seventh-grade students have math class in the morning but not science class, find how many seventh grade students there are.

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola