Well first off lets subtract 7 from 11.2, that gives us 4.2 so we know it has walked 1 minute so far...and now we divide 4.2 from 7 which gives us 0.6 so it has walked 1 minute and 36 seconds
7x*7x=49x^2, so the lot measures 49x^2.
The sports field, however, measures 5x*5x=25x^2.
The difference between these is 49x^2-25x^2=
, or B.
So a triangle has a total of 180 degrees
107 + 2x-5 +x = 180
solve for x
112 + 3x = 180
-112 -112
3x = 68
x = 22.6667 degrees
Hi!
So, to "half" a number, you multiply it by 1/2 or 0.5
"A number" is a number which we don't know the value of, so we could use a variable. Any letter you want is fine, but let's use x
"Decrease by 12" This simply means to subtract 12, so - 12
So, now we have:
1/2x - 12
<span>20 p/2 pounds = 20p/200p = 1/10</span>
