X+y=6
x=10
10+y=6
y=-4
10=-4+z
-4+z=10
z=10+4
z=14
So the correct answer is 14
<span>a clocks minute and hour hand make a straight line 22 times a day</span>
A real couch would probably be around 2 or 2.5 meters in length, depending on how many people it should fit and for what market it was made.
So, first, what are the two sides?
let's call then x and y
we know that 2(x+y)=12.5 (that's the distance around)
so that means that x+y=6.25 (I just divided both by 2)
now, x=4y (from "4 times as long as it is wide")
so we can substitute:
x+4x=6.25
5x=6.25
x=1.25
so one side, is 1.25 and the other will be 1.25*4=5
and for the area we multiply the two:
1.25*5=6.25 square kilometers, and this is the answer!
$0.30/$1.50= 0.2= 20%
20% of $1.50 = $0.30
