30 mi/cm * 45 cm is NOT 145 mi
check your calculator
The question is: "The scale on a map is 1 cm: 30 mi. The distance on the map between Dallas, TX, and Miami, FL, is 43.5 cm. What is the actual distance between Dallas and Miami?"
I got 145 I'm not sure what I did wrong
2 answers
scale:
1 cm: 30 mi
= 43.5 cm : (43.5)(30 miles) *
= 43.5 cm : 1305 miles
in *, I multiplied both terms of the ratio by 43.5
think of ratios as fractions, if you multiply or divide both the numerator and denominator
by the same constant the value of the fraction remains the same
e.g.
2/5 = 2(8)/(5(8)) = 16/40
This forms the basis for the method of reducing fractions to lowest terms.
1 cm: 30 mi
= 43.5 cm : (43.5)(30 miles) *
= 43.5 cm : 1305 miles
in *, I multiplied both terms of the ratio by 43.5
think of ratios as fractions, if you multiply or divide both the numerator and denominator
by the same constant the value of the fraction remains the same
e.g.
2/5 = 2(8)/(5(8)) = 16/40
This forms the basis for the method of reducing fractions to lowest terms.
1 answer