Look at the numbers below. −9.8 −5.4 1.0 14.8 which shows the best way to add these numbers using the commutative and associative properties? a. (–9.8 + 1.0) + (–5.4 + 14.8) b. (–9.8 + 14.8) + (–5.4 + 1.0) c. (1.0 + 14.8) + (–9.8 + (–5.4)) d. (1.0 + (–9.8)) + (14.8 + (–5.4))

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?