X=width of the lake
y=length of the lake.
we set out this system of equiations
x*y=9/20
x=y/5
we solve by sustitution method
(y/5)*y=9/20
y²/5=9/20
y²=(5*9)/ 20
y²=2.25
y=√2.25=1.5
x=y/5
x=1.5/5=0.3
Solution:
width of the lake=0.3 miles
lenght of the lake=1.5 miles
10.2 all you have to do is add up all the sides... hope this helps!
Answer:
x2 - 4x - 4
———————————
x - 2
Step-by-step explanation:
Answer is 4 books per minute. 240 (books) divided by 60 (minutes in one hour) equals 4
