Anonymous Anonymous

17-10-2016
Mathematics

Answered

Write the following proportion using colons. 7 is to 21 as 3 is to 9.

A7:21 = 9:3
B7:3 = 21:9
C21:7 = 3:9
D7:21 = 3:9

Verified Answer :

17-10-2016

the answer is D. 7:21=3:9

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