MATHEMATICS PROBLEM SOLVER

It is a site for parents, students and teachers. This site can help O-LEVEL or GCSE secondary school students in mastering mathematics subject. It intends to involve the learners by making them follow up the examples before they can do questions on their own at the TRY THIS.... section. There are some videos, tests, quizzes and past examination questions. Learning the examples will ultimately give students the required confidence in solving various questions in mathematics.

Monday 30 July 2018

A. P. 2

The 1st term of an A.P. is 72 and the common difference is 80. Find the 10th term.

Solution

A₁= 72, d = 80

A_n = A₁ + (n-1)d

A₁₀ = A₁ + (10-1)d

A₁₀ = A₁ + 9d

A₁₀ = 72 + (9x80) [ after substituting A₁= 72, d = 80 as given above]

∴ A₁₀ = 72 + 720

A₁₀ = 792

Hence the 10th term is 792.

TRY THIS……………

The 1st term of an A.P. is 160 and the common difference is 219. Find the 5th term.

MATHEMATICS PROBLEM SOLVER

Monday 30 July 2018

A. P. 2

No comments:

Post a Comment