Answer:
28
Step-by-step explanation:
2x + 3x + 40 =180
5x= 180 - 140
5x=140
x= 28
<span>What is 6 [4•(72-63)÷3]?
</span><span>6 [4•(72-63)÷3]
</span>
=72
Answer: 
Step-by-step explanation:
Let x be the price. 20% (0.20) 7.25% (0.0725)

Mary is incorrect. Perimeter is not proportional to area. An example which you can use is garden A is an 8 by 1 rectangle. The perimeter is 18 while the area is 8. Graden B is a 4 by 4 square. The perimeter is 16 (less than garden A) while the area is 16 (two times more than garden B).
Answer:
60
Step-by-step explanation:
5:4 = 60:48