Answer:
what do you need help with?
Step-by-step explanation:
Answer: A) 23
Step-by-step explanation:
You can substitute x in the equation for the unknown number.
This way, x + 2x= 69
3x=69
x=23
Answer:
2(3x+4) + 2(2x-3)
Step-by-step explanation:
this is because to be able to find the perimeter you use the formula 2(l) + 2(w)
Answer: 508mm
Step-by-step explanation:
20 x 2.54 = 50.8
50.8 x 10 = 508