jabraeshaw
18.12.2021 •
Mathematics
Pea aphids, Acyrthosiphon pisum, are small, wingless, sap‑sucking insects that live on plants. They evade predators (such as ladybugs) by dropping off of the plants. A study examined the mechanism of aphid drops. Researchers placed aphids on a leaf positioned at four different heights (in centimeters, cm) above a surface covered with petroleum jelly. When a ladybug was introduced, the aphids dropped, and the petroleum jelly helped capture their landing posture (upright or not). Each aphid performed this experiment only once.
Calculate the percentage of aphids that land upright when dropped from the indicated heights. (Enter your answers rounded to one decimal place.)
dropped from 33 cm:
%
dropped from 55 cm:
%
dropped from 10 cm:
%
dropped from 20 cm:
Landing PostureDropping Height
33 cm55 cm1010 cm2020 cm
Upright1919232328283030
Not upright1212883311
Sample Size3131313131313131
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Ответ:
6,400
Step-by-step explanation:
One yard equals 3 feet.
160/3=53.3333
120X53.3333=6400