Mathematics, 16.09.2019 23:50, shongmadi77

Jamal watched his older brother robert lift weights. the bar alone had a mass of 20 kg. on the bar he had two 11.4 weights, two 4.5 kg weights, and four 450 g weights. what mass was robert lifting?

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Jamal watched his older brother robert lift weights. the bar alone had a mass of 20 kg. on the bar h...