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mariarad [96]
3 years ago
13

The area of a rectangle is n^2+6n-27. One side of the rectangle is n + 9. What is the length of the

Mathematics
1 answer:
daser333 [38]3 years ago
6 0

n^2 +6n-27 = n^2+6n-27+0\\~\\n^2+6n-27+0 = n^2+6n-27+(3n-3n) \\~\\n^2+6n-27+(3n-3n) = n^2+9n-3n-27\\~\\n^2+9n-3n-27 = n\cdot(n+9)-3\cdot(n+9) \\~\\n\cdot(n+9)-3\cdot(n+9) = (n+9)(n-3)

The other side is n-3

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Answer:

The solution in the attached figure

Step-by-step explanation:

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3 years ago
Find the surface area of the rectangular prism
Lapatulllka [165]

Answer:

158 in

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5 0
2 years ago
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The parallelogram shown below has an area of 24 units2.
Ber [7]

Answer:

9

===================================================

Explanation:

The area of the parallelogram is equal to the base times height. The formula to use is A = b*h. The height and base are always perpendicular to one another.

The base is some unknown variable b. Multiply the base by the height 15 to get 15*b which is equal to the area 135

Therefore, 15*b = 135

Divide both sides by 15 and we isolate b

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15b/15 = 135/15

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So the base is 9

Check:

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so the answer is confirmed

side note: we never use the value 17 at all. It is likely put in there as a distraction.

Step-by-step explanation:

6 0
3 years ago
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