Mrs Ali decided that she needed 15 m? of curtain material. She was shown some materials in three different widths: 1.5 m b 1.2m 90 cm What length of each width would she have to buy?

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?