Mathematics, 21.08.2019 23:30 baeethtsadia

There are 3 ruby throated hummingbirds and two of another type at the feeder. the birds have a mass of 23 grams in all. what other type of hummingbird is at the feeder? explain

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There are 3 ruby throated hummingbirds and two of another type at the feeder. the birds have a mass...