Answer:
3(4.5) Because they equal the same thing
Step-by-step explanation:
4.5(+3)=13.5
3(4.5)=13.5
Answer:
a=2.5
Step-by-step explanation:
3a-2.4=5.1 Add the like terms ( plus 2.4 cancels out -2.4)
+2.4 +2.4
3a=7.5 Now divide by 3
/3 /3
a=2.5
So firstly, multiply both sides by 4 (the reciprocal of 1/4): 
Next, subtract both sides by 2 and your answer will be: 
Answer:
none
Step-by-step explanation:
, the answer 17.25, there must a be a typo in your question
7x9=63
63÷2= 31.5x4
126= area of the triangles
7x7= 49= area of the square.
126+49= 175 ft