15/26 * 4/9 = 60/234 = 10/39
-2(9 - x - 7)
= -2(2 - x)
= -4 + 2x
Answer:
-4 + 2x
The answer to the question is b
I can help you only with #2.
Area= l*w
Area=(l+3)*w
Area= 130
Let's try 10 and 13.
Is the length 3 greater than its width? YES
Does it multiply to 130? YES
LENGTH= 13 CM
WIDTH=10 CM
cHECK=
13*10=130
11.4 multiplied by 4 trucks = 45.6 tons in the trucks.
55 - 45.6 = what remains in the pile which would be 9.4 tons.
