First piece is x
second piece is y. y=4x
third piece is z. z=3y=12x
x+y+z=680
x+4x+12x=680
17x=680. x=40cm y=160cm. z=480cm
Step-by-step explanation:
9x2 − 12x + 4 = 18 - 12x + 4 = 22 - 12x = 2(11 - 6x)
length of 1 side = ± sqrt 2(11-6x) (rej neg value)
Answer:
The second part of 72 is 
Step-by-step explanation:
The whole part is given as = 72
One part of it = 1/3
Let the other part of it = k
Now,according to the question:
First Part + Second Part = 72
or, 
⇒
or, 
or, k = 215/3
Hence, the second part of 72 is 
Answer:
3
Step-by-step explanation
cause there are three rooms that need to be painted