Sheldon Cooper is interested in studying the effect of distance from the bathroom mirror and the number of droplets of toothpaste that splatter on the mirror during tooth brushing. To conduct his study, he brushes his teeth at various distances from the mirror a total of 100 times. What is the sample of this study?

the sample = the 100 times Sheldon brushed his teeth in front of the mirror

Step-by-step explanation:

In statistics, the sample is a small portion of a population that a researcher can study. It should represent a random subset of data from the population. The advantage of using a sample is that the size is smaller than the whole population, which makes it more manageable.

When you study the whole population, you are performing a census. That means that you are not obtaining a sample. In this case, the population would be every time that Sheldon or someone else washes his/he teeth in that bathroom.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

50x5=$250

step-by-step explanation: