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Rudik [331]
3 years ago
7

Which pair of ratios forms a proportion? (4/5 10/13), (7/8 15/18), and (1/2 14/28)

Mathematics
1 answer:
beks73 [17]3 years ago
4 0

Answer:

½ and 14/28  

Step-by-step explanation:

If a pair of ratio forms a proportion, they are equal.

First pair of ratios:

4/5 =10/13

Convert to the least common denominator     (4 × 13)/65 = (10 × 5)/65

                                                                                  52/65 ≠ 50/65

The first pair of ratios is <em>not</em> a proportion.

Second pair of ratios:

7/8 =15/18

Convert to the least common denominator     (7 × 9)/72 = (15 × 4)/72

                                                                                 63/72 ≠ 60/72

The second pair of ratios is <em>not</em> a proportion.

<em>Third pair of ratios: </em>

½ =14/28

Convert to the least common denominator     (1 ×14)/28 = 14/28

                                                                                 14/28  = 14/28

                                                                                       ½ = 14/28

½ and 14/28 form a proportion.

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5 0
3 years ago
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