B

9000153308

Level: 
B
Statistical file contains repeating measurements of a body mass in kilograms. Find the change in the coefficient of variation if we convert all data in the file to grams.
The coefficient of variation does not change.
The coefficient of variation becomes bigger.
The coefficient of variation becomes smaller.

9000150106

Level: 
B
Evaluate the following integral on the interval \(\left(\frac25,+\infty\right)\). \[ \int \frac{7} {2 - 5x}\, \mathrm{d}x \]
\(-\frac{7} {5}\ln |2 - 5x| + c,\ c\in \mathbb{R}\)
\(- \frac{7} {5\cdot \ln |2-5x|} + c,\ c\in \mathbb{R}\)
\(\frac{7} {5}\ln |2 - 5x| + c,\ c\in \mathbb{R}\)
\(\frac{7} {5\cdot \ln |2-5x|} + c,\ c\in \mathbb{R}\)

9000150107

Level: 
B
Evaluate the following integral on the interval \((3,+\infty)\). \[ \int \frac{x^{3} - 27} {x - 3} \, \mathrm{d}x \]
\(\frac{x^{3}} {3} + \frac{3x^{2}} {2} + 9x + c,\ c\in \mathbb{R}\)
\(\frac{x^{3}} {3} -\frac{3x^{2}} {2} + 9x + c,\ c\in \mathbb{R}\)
\(\frac{x^{3}} {3} -\frac{3x^{2}} {2} - 9x + c,\ c\in \mathbb{R}\)
\(\frac{x^{3}} {3} + \frac{3x^{2}} {2} - 9x + c,\ c\in \mathbb{R}\)

9000153606

Level: 
B
Give a verbal description to the angle shown in the picture.
The angle between the edge on triangular face and the base edge from the same face.
The angle between the triangular face and a base edge not in this face.
The angle between two triangular faces having a common edge.
The angle between a triangular face and square base.