Calculate the length of AC to 1 decimal place in the trapezium

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

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers