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What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample