on a map 1/2 inch represents 50 miles. How long would a line need to be to represent 750 miles. so I thought I should divide 750 by 50 than multiply 15 { the answer I got } by 1/2 but I have a feeling its wrong

You could use a proportion.

(1/2)/50 = x/750

50x = 375

x = 7.5 inches

Your figures are right.

To determine the length of a line on the map that represents 750 miles, you can use the scale provided.

The scale states that 1/2 inch represents 50 miles. This means that for every 1/2 inch on the map, it represents 50 miles in real life.

To find the length of the line on the map that represents 750 miles, you need to divide 750 miles by 50 (miles/inch) to convert the miles into inches.

750 miles รท 50 miles/inch = 15 inches

Therefore, a line that represents 750 miles on this map would need to be 15 inches long. So, your intuition was correct!