Answer:
(−∞,∞)
Step-by-step explanation:
THe range is Infinity
Prime factor is a factor that is a prime number.
Prime factors of :
8 : 2 × 2 × 2. Also can be written as

12 : 2 × 2 × 3. Also can be written as

20 : 2 × 2 × 5. Also can be written as

30 : 2 × 3 × 5
56 : 2 × 2 × 2 ×7. Also can be written as

70 : 2 × 5 × 7
You can find all of them by using Factor Tree [ as shown in the picture] or Dividing by prime numbers.
Answer:
Step-by-step explanation:
x + 3x + 5x = 54
Combine like terms
9x = 54
x = 6
Now we know that the base length, x, is equal to 6.
From there, we can find the length of the other values as well.
Second piece: 3x = 18
Third piece: 5x = 30