Answer:
Tally marks
Step-by-step explanation:
It is most likely tally marks because all of the other options are more recent than option b the Greek and Latin letters are dated to be closer to the modern times than the cavemen were.
The answer is True because 5=5
Answer:
4, 7 ,2
Step-by-step explanation:
Hello there!
4(x + 6) = 5( x + 9) + 4x
We wanna start with the distributive property
(4)(x) + (4)(6) = (5)(x) + (5)(9) + 4x
4x + 24 = 5x + 45 + 4x
4x + 24 = 9x + 45
Subtract 24 on both sides
4x + 24 - 24 = 9x + 45 - 24
4x = 9x + 21
Subtract 9x on both sides
4x - 9x = 9x + 21 - 9x
-5x = 21
Divide both sides by -5
-5x/-5 = 21/-5
x = -21/5