Answer:
<h2> 10cm</h2>
Step-by-step explanation:
Given that the scale of the drawing is 3 cm to 15 ft.
This means that, every 15ft in the drawing will be represented by 3cm.
also there are a total of 10 lanes
given that the width of one lane is 5ft, the ten will be 5*10= 50ft
Now how many 15ft are there in 50ft= 50/15= 3.33
now in cm = 3.33*3=10cm
therefore on the drawing the width will be 10cm
The subtraction of 4 on both sides would isolate the term 1.1j, then the division of 1.1 on both sides would isolate j.

I used the Pythagorean formula, which is a² + b² = c².
a² and b² are the two side legs while c² is the hypotenuse.
One of the side is 42 - 8 = 34 cm.
Step-by-step explanation:
(2(x+y)÷(x+y)(x-y) )×(x+y÷(x^2+2×x×2y+2y^2)
2÷x^2+2y^2