6 3/8 - 1 5/8 =
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An an average person has 6×10 by the power of two as many red blood cells as white blood cells a small sample of the blood has 7×10 by the power of three white blood cells about how many red blood cells are in the sample

Answer this question! 30 points and brainliest!

Which math sentence can be used to determine if the triangle is a right triangle?