10 students of Elena's classmates like to make jewellery.
<u>Step-by-step explanation:</u>
Let total no.of classmates who liked the jewellery = x
Here, in the given problem, given she asked her classmates '20'. So, it clearly shows that total number of students/classmates = 20. Also, in that, 50% said like to make jewellery. Now find 'x' as below,



Hence, the total number of classmates who liked to make Jewellery = 10
D. data collection
Simply the act of collecting data from sample
Answer:
The circumference is 25.13
Step-by-step explanation:
Formula: C=2πr
multiply the radius by 2 and pi
Answer:
x=7y+2
Step-by-step explanation:
switch the letters