Which one of these shapes is not like the others? Explain what makes it different by representing each width and height pair with a ratio.

Three ovals, A, B and C on a grid. At each oval’s widest point, oval A has width 5 units and height 4 units. Oval B has width 10 units and height 8 units. Oval C has width 10 units and height 6 units.

In one version of a trail mix, there are 3 cups of peanuts mixed with 2 cups of raisins. In another version of trail mix, there are 4.5 cups of peanuts mixed with 3 cups of raisins. Are the ratios equivalent for the two mixes? Explain your reasoning.

For each object, choose an appropriate scale for a drawing that fits on a regular sheet of paper. Not all of the scales on the list will be used.

Which scale is equivalent to 1 cm to 1 km?

1. Find 3 different ratios that are equivalent to \(7:3\).
2. Explain why these ratios are equivalent.