February | 2018 | Sarah's Blog

Sarah's Blog

Week 4 – Adding and Subtracting Radicals

To add or subtract radicals, you combine like terms. The radicand and index must be the same. Only the coefficient will change. Simplify: First, you need to change the entire radicals to mixed radicals. and are like terms because they have the same radicand and the same index. and are also like terms and can…

Week 3 – The Absolute Value of a Real Number

The absolute value of a real number is defined as the principal square root of the square of a number. The absolute value of a number is the distance of the number from 0 on a number line. The absolute value is always positive. On the number line below, the numbers -4 and 4 is located…

Week 2 – Geometric Sequences

A geometric sequence is formed by multiplying each term after the 1st term by a constant, to determine the next term. The constant is the common ratio (r). 3, 6, 12, 24, 48,… To find the common ratio: The common ratio of this sequence is 2. To find any term in a geometric…

Week 1 – Arithmetic Sequence

Arithmetic sequence: 12, 15, 18, 21, 24 Determine General equation for Determine