Aron rides his bike 12 miles in 3 hours. if he rides at a constant speed, select the answers below that are equivalent ratios to the speed he rides. Select all ratios that are equivalent. 1) 4 miles in 1 hour.

2) 16 miles in 4 hours.

3) 8 miles in 3 hours.

4) 20 miles in 6 hours.

1) 4 miles in 1 hour

2) 16 miles in 4 hours

Step-by-step explanation:

The simplest form of this ratio is 4:1

16:4 and 12:3 both reduce to 4:1

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points