Josh is preparing for an exam by completing practice tests that have different numbers of questions. for each practice test he notes the number of questions and the time it takes him to complete the the test.
next josh creates a scatter plot and draws a trend line to fit the data. to see how well the trend line represents the data, josh draws black lines to represent the distance each data point lies away from the trend line.
what is the sum of the residuals for all the points?

1. credits

2. dual - aspect

hope i : )

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have