In late spring, a student began conducting an investigation about the flower preferences of bees. she counted the number of wildflowers in a small plot and created the following table. plant species number of plants dandelion 13 indian paintbrush 8 queen anne’s lace 20 thistle 29 she planned to observe the flowers for the next five days for an hour at the same time each afternoon. then she would plot the data in a multiple line graph to compare the number of bees that visited each flower. which statement best describes the data in this investigation? the data would be more accurate if she carried out all the observations in one day so weather conditions would be constant. the data would be more valid if she made the observations daily for two months. the data she collected is inaccurate because the investigation is not repeatable. the data she collected cannot be plotted in a line graph because i

The correct answer is B.

The data would be more valid if she made the observations daily for two months.

A student began conducting an investigation about the preferences of bees. She conducted the number of wildflowers in a small pot and created the following table. Plant Species Number of Plants Dandelion 13 Indian paintbrush 8 Queen Anne’s lace 20 Thistle 29 She planned to observe the flowers for the next five days for an hour at the same time each afternoon. The data would be more valid if she made the observation daily for 2 months

if you answer my question i will answer yours

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.