Answer:
c
Step-by-step explanation:
do not comment on this or else...........................
<h3>
Answer: 54x^2+360x+600</h3>
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Explanation:
One square face has an area of
(length)*(width) = (3x+10)(3x+10) = 9x^2+30x+30x+100 = 9x^2+60x+100
after using the FOIL rule
Multiply that by 6 to get the total area of all 6 faces
6*(9x^2+60x+100) = 54x^2+360x+600
The surface area units are in square feet.
9×9=81 so it would be 9cm
First, he would multiply 2x + 2y = 6 by 3.
7x - 6y = 8
2x + 2y = 6....multiply by 3
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7x - 6y = 8
6x + 6y = 18 (result of multiplying by 3)
-------------add
13x = 26.......poof...the y's have been eliminated :)
x = 2
