Here,
let width(b)be x then,
length (l)=9cm+x
area =112 sq cm
now,
area of rectangle=l*b
or, 112=(9+x)x
or, 112=9x+x^2
or, 0=x^2+9x-112
or, 0=x^2+(16-7)x-112
or, 0=x^2+16x-7x-112
or, 0=x(x+16)-7(x+16)
or, 0=(x-7)(x+16)
either,
0=x-7
or,7=x
x=7cm
Or,
0=x+16
or, -16=x
x= -16[impossible,as distance is never negative] so,
x=7cm
therefore,length = 7cm + 9 cm = 16cm and width = 7cm.
;)
I don't know if you need the answer to how long the ladder is or what degree the ladder and ground form so I am going to give you both.
The ladder is 58.31 inches
The degree is 59.04
If you have any question let me know
Supplementary and adjacent.
Two angles are called supplementary when their measures add up to 180 degrees.
Adjacent angles are two angles that have a common vertex and a common side but do not overlap.
The monthly interest rate is 6%/12 = 0.5%. The interest earned each month is
0.005*$500,000 = $2500
You can withdraw $2500 each month without disturbing the principal amount.
