Answer:

Step-by-step explanation:
Without loss of generality, let there be 5 star shaped cookies. Following the proportions given, there will be 6 circular cookies. We can set up the following proportion to find out how many triangular cookies there would be:
.
Therefore, for every 5 star shaped cookies there will be 20 triangular cookies.
Simplifying this ratio we have
.
Answer:
5 students.
Step-by-step explanation:
25% is a quarter of the amount, or 1/4. A quarter of 20 is 5, since 4 times 5 is 20. So 5 students have cats.
Answer:
Step-by-step explanation:
.05
Hello!
The least common multiple is 3
Hope this helps!
Answer:
C
Step-by-step explanation:
Use the equation 
Input the numbers----> 
Simplify ----> 
Find the square root------->