All Tasks

Exponential Function

The function $y=3^x$ is given. For what $x$ has the function the values $0.4$ and $1.4$? Round to three decimal places.
 
# Exponential function

Training
11

Median of heights

Some students in a class measured their heights as displayed: $${155,157,162,164,166,177,177}$$ What is the median?
 
# Probability

Learning
5

What do you prefer between sea and mountain?

We made a soundage about what people prefer between sea and mountain for holidays (look to the image to see the percentages): blue part prefer the sea; yellow part prefer the mountain; red part don't mind between them. Knowing that the people who prefers sea are 146, how much are the total of people?
 
# Boxplot & histogram

Training
9

Least common multiple, Greatest common divisor

To solve the main task (and a lot of similar problems), knowing the least common multiple and the greatest common divisor can be useful. So, fill in the blanks and complete the definitions.
 
# Fractions

Learning
6

Rewriting Decimal Numbers as Fractions

Consider the following decimal numbers: 0.776 0.0002 7.75 Rewrite each number as a fraction and mark the solutions that match your results.
 
# Fractions

Training
6

Combination of all

Calculate this expression and write the result as a fraction $$\biggl( \frac{3}{5} - 0,\bar{4} \biggr) \cdot \frac{9}{2}+\biggl(2,\bar{3}-0,5 \biggr) \cdot \frac{3}{2}$$
 
# Fractions

Reasoning
6