Plz answer this question asap!
how many square tiles of side 20 cm are needed to cover the floor?

tiles

Step-by-step explanation:

there are many ways to solve this soo...

1. convert to centimetres (there are 100 centimetres in 1 metre)

2. the square tiles area =

2. find the large area (4.8m x 3.8m or 480cm x 380cm)

2. find the two smaller areas (1.2m x 1.8m or 120cm x 180cm)

3. add to find total area

4. find how many tiles are needed

tiles

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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