Answer:
21 + 3a
Step-by-step explanation:
3 (7+a)
distribute 3 into parentheses:
21 + 3a
Answer:
Step-by-step explanation:
Isn’t this mathematics not science
The square root of 9 is 3
Jessica solved for the correct value of a, but Sally's review was incorrect.
Answer:
the visible number of cubes is 7
Step-by-step explanation:
Assuming that there are no hidden cubes, the # of visible cubes is 7