Answer:
A = 325 yd^2
Step-by-step explanation:
The area of a parallelogram is found by multiplying the base times the height
A = bh
A = 15* 21 2/3
Changing the mixed number to an improper fraction
21 2/3 = (3*21+2)/3 = 65/3
A = 15 * 65/3 = 15/3 *65 = 5*65 =325
A = 325 yd^2
Find like terms and group them
3n and 5n are same and 4n^2 and 4n^2 are same
but 3mn and 5n are not and 3n and 2n^3 are not
group like terms
(-2m^2)+(-2mn+1mn)+(8)+(-10m)+(10n-5n)+(2n^2)
add like terms
(-2m^2)+(-mn)+(8)+(-10m)+(5n)+(2n^2)
-2m^2+2n^2-10m+5n-mn+8 is simplest form
Looks like you did most of it.
The next step would be setting them equal to 105, like the problem suggests.
Then we can plug back in to find the numbers.
The three numbers are 
.
Hope this helps.
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<span>Hi, A cylinder has 3 faces - 2 circle ones and a rectangle</span>
