The matchstick pattern uses 4 sticks for 1 square, 7 for 2 squares, 10 for 3 squares (joined in a row). Write an expression for the number of matchsticks needed for n squares.

Question

Accepted Answer

3n + 1. Counts 4, 7, 10 increase by 3 each time, so it is 3n + something. For n = 1, 3(1) + 1 = 4. Thus 3n + 1.

The matchstick pattern uses 4 sticks for 1 square, 7 for 2 squares, 10 for 3 squares (joined in a row).
Write an expression for the number of matchsticks needed for n squares.

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 6 Forming Expressions practice

The matchstick pattern uses 4 sticks for 1 square, 7 for 2 squares, 10 for 3 squares (joined in a row).Write an expression for the number of matchsticks needed for n squares.

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 6 Forming Expressions practice

The matchstick pattern uses 4 sticks for 1 square, 7 for 2 squares, 10 for 3 squares (joined in a row).
Write an expression for the number of matchsticks needed for n squares.