Answer:
l(l - 2) = 168
Step-by-step explanation:
Let w = width
Let l = length
Let A = area
w = l - 2
A = l * w
also, A = 168
equating the two values of A
l * w = 168
l * (l - 2) = 168
l^2 - 2l = 168
l(l - 2) = 168
Answer: he can walk for the clase thenmake a left for them
Step-by-step explanation:
Answer:
Length =24m and width = 21m
Step-by-step explanation:
Given,
Area of rectangle, A = 504 m^2
Perimeter of rectangle, P = 90 m
Since we know, A = Length * width and P = 2(Length + width)
So, A = L * w
=> 504 = L*w ------------------(1)
And P = 2(L + w)
=> 90 =2( L + w) ----------------(2)
Plug L =504/w in equation 2
i.e. 90 = 2( 504/w + w)
or 45 = 504/w + w
or 45 = (504 + w^2 ) / w
or 45w = 504 + w^2
or w^2 - 45w + 504 = 0
On solving above quadratic equation we get:
w = 21 or 24
So we take width , w= 21 meter
Then length will be, L =504/21 =24 meter
Hence length and width of rectangle are 24m and 21m respectively.
<span>When you do a division problem and the quotient (answer) ends up being with a number that just keeps repeating say like when you divide </span>
<span /><span>20 ÷ 9 = 2.22222222222</span>
<span /><span>In this case you don't have to write all these 2s, you just put a line on top of the second 2 after the decimal to show that it repeating. </span><span> </span>
<span> _
2.22 </span>
<span>That line is a repeating bar.</span>
<span>Hope this helps. :)</span>
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