Answer: -5
Step-by-step explanation:

Answer:
idk i just need the points
Step-by-step explanation:
Answer:

Step-by-step explanation:
Since there are 20 students, this will be the denominator.
Now, to find how many students have a dog and a cat, you need to subtract all the numbers with 20. The leftover number will be the amount of students.
7+8+8=23
23-20=3
So, there are 3 students who have a dog and a cat.
So, the fraction will be 
Answer:
Step-by-step explanation:
circumference = 2
r
= 2 × 3.14 × 50
= 31.4 mm
hope this helps
plz mark it as brainliest !!!!!!!!!!!