Answer:
a) 5:3
b) 25:12
c) 1:2
Step-by-step explanation:
a) 20:12 = 20/12 = 10/6 = 5/3 = 5:3
b) 25:12 -> cannot be simplified so -> 25:12 itself
c) 10:20 = 1/2 = 1:2
If the sides were 2 and 3 then using Pythagoras the diagonal would be sr(2^2 + 3^2) = sr(13)
The actual diagonal is 8 inches so the sides need to be scaled by 8/sr(13)
The screen area will be 2 x 8/sr(13) x 3 x 8/sr(13) = 29.539....
Rounded to nearest sq.inch this is 30 sq.inch
1. %.34 per hour of use 2. 6.34 minutes, You should really do these yourself as they are simple division problems.
X^2 + y^2 can be replaced by r^2 to obtain the polar equation equivalent to x^2 + y^2 = 5. Thus, r^2 = 5, and r = sqrt(5). That's all that's necessary. No matter what the angle is, r will always be sqrt(5).
