Use the value of the ratio to determine which ratios are equivalent to 7: 15.a. 21: 45b. 14: 45c. 3: 5d. 63: 135

Answer:a. 21: 45d. 63: 135Step-by-step explanation:Ratio or Relationship of two quantities is the result of comparing two quantities.Such a comparison could be indicated as a reason, in four different ways, in this way: 1)a: b 2)a ÷ b 3)a/bd)The reason for a is a b.Equivalent ratios can be used to show the same relationship between two quantities. Remember that the word "equivalent" means the same.Problem developmentWe observe what are the equivalent relationships 7:15 and conclude that they are the following:a.To find the equivalent ratio, we divide the numerator and denominator by the same number , In this case we divide by 3: 21: 45 = 21/45 = 21÷3 /45÷3 = 7/15 d.To find the equivalent ratio, we divide the numerator and denominator by the same number , In this case we divide by 9: 63: 135= 63/135 = 63÷9 /135÷9= 7/15