<span>8.7 = 3.5m - 2.5(5.4 - 6m
3.5m - 2.5(5.4 - 6m) = 8.7
18.5m - 13.5 = 8.7
18.5m - 13.5 + 13.5 = 8.7 + 13.5
18.5m = 22.2
</span><span>18.5m = 22.2
--------- --------
18.5 18.5
m = 1.2
</span>
Answer:
0.016
Step-by-step explanation:
To find the quotient, we must divide .4 by 25.
Let's think of .4 as 0.4
How many times will 0.4 go into 25?
0.016 times.
An 80:1 scale means that for every unit on a diagram, there are 80 units in the real world. So, this means that the floor plan is (80x4) x (80x5) cm, which equals 320 x 400 cm.
If you want to further simplify your answer, this translates to 3.2 meters x 4 meters
Since there is a power of 2 and constants, without a variable power of 1, I would use square root method.
Move the 7 to the right and you get 2x^2 = 16
Then divide both sides by 2 and get x^2 = 8
Now take the square root of each side and get x = +-sqrt 8
sqrt 8 can be simplified since 2*4 = 8 and 4 is a perfect square.
Therefore the final answer is x = +-2sqrt2