4 + -1 = 3
Or -1 - 4 = -5
I would put 3.
Answer:
its D (18)
Step-by-step explanation:
I counted '-'
72 is dividable by 3. It is divisible by 3 because when you add 7 and 2, you get 9. According to the tests for divisibility, if the sum of the digits is divisible by 3, then the whole number is. 9 is divisible by 3, therefore 72 is as well.
Answer: x=3 units. Perimeter:22 units
Step-by-step explanation:
P=perimeter
3x-1=2x+2
x-1=2
x=3 units
P=3x-1+2x+2+2x
P=3(3)-1+2(3)+2+2(3)
P=9-1+6+2+6
P=8+8+6
P=22 units
