It’s 9. 3x9 is 27. Nothing else times anything equals 27, excluding decimals.
Answer:

Step-by-step explanation:
Formula for the perimeter of a rectangle: 
Answer:(3x + 7) (x +5)
Step-by-step explanation:
Answer:
0.5
Step-by-step explanation:
Answer:
Step-by-step explanation:
A factor tree is not unique for a given number. Instead of expressing 36 as 2 × 18, we can express 36 as 6 × 6. Prime factorization of 36 using factor tree method is 2 × 2 × 3 × 3 = 2² × 3².