9 docs tagged with "Grade 9"

Learn the distance formula with clear derivation, 5 worked examples, and practice problems. Find the distance between any two points on a coordinate plane.

Learn how to solve linear equations step by step with clear theory, worked examples, common mistakes, and practice problems for grades 7-9.

Understand negative exponents, learn the reciprocal rule, and practice simplifying expressions with negative powers. Step-by-step examples for grades 8-9.

Learn the Pythagorean theorem with clear explanations, a visual proof, worked examples, and practice problems for grades 8-9.

Practice the Pythagorean theorem with 5 worked examples and answers. Find missing sides, verify right triangles, and solve real-world problems step by step.

Solve real-world Pythagorean theorem word problems step by step. Ladders, navigation, construction, and sports — with full worked solutions for grades 8-9.

Learn what Pythagorean triples are, see a list of common triples, and discover how to generate new ones using a simple formula. Worked examples and practice for grades 8-9.

Learn scientific notation step by step — how to convert numbers, multiply, divide, and add in scientific notation. Worked examples and practice for grades 8-9.

Learn how to calculate the surface area of prisms, cylinders, pyramids, cones, and spheres with clear formulas, worked examples, and practice.