Which ratios form a paportion?
A:4/9, 12/25
B:3/7, 18/42
C:5/11, 20/45
D:5/8, 15.25

Question

16-01-2017
Mathematics

contestada

Which ratios form a paportion?
A:4/9, 12/25
B:3/7, 18/42
C:5/11, 20/45
D:5/8, 15.25

Respuesta :

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texaschic101 texaschic101 · Answer 1 · 2017-01-16T18:33:18+01:00

A. 4/9 = 12/25
cross multiply
(4)(25) = (9)(12)
100 = 108.....this does not form a proportion

B. 3/7 = 18/42
cross multiply
(3)(42) = (18)(7)
126 = 126......this forms a true proportion <==

C. 5/11 = 20/45
cross multiply
(5)(45) = (11)(20)
225 = 220...this does not form a proportion

D. 5/8 = 15/25
cross multiply
(8)(15) = (5)(25)
120 = 125....this does not form a proportion

Which ratios form a paportion? A:4/9, 12/25 B:3/7, 18/42 C:5/11, 20/45 D:5/8, 15.25

Respuesta :

Otras preguntas

Which ratios form a paportion?
A:4/9, 12/25
B:3/7, 18/42
C:5/11, 20/45
D:5/8, 15.25