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Olin [163]
3 years ago
14

A rectangular garden has a walkway surrounding it that is 4 feet wide (a uniform width

Mathematics
1 answer:
Oksana_A [137]3 years ago
7 0

Answer: 300 square feet  

Step-by-step explanation:

length of walkway = 20 + 2x

width of walkway = 15 + 2x

A(x) = (20 + 2x)(15 + 2x)

A(x) = 300 + 30x + 40x + 4x2

A(x) = 300 + 70x + 4x2

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3 years ago
Read 2 more answers
Will choose brainliest! Please help! (This is Khan Academy)
NeTakaya

Answer:

Option B. A = (5/6)^-⅛

Step-by-step explanation:

From the question given above, we obtained:

(5/6)ˣ = A¯⁸ˣ

We can obtain the value of A as follow:

(5/6)ˣ = A¯⁸ˣ

Cancel x from both side

5/6 = A¯⁸

Recall:

M¯ⁿ = 1/Mⁿ

A¯⁸ = 1/A⁸

Thus,

5/6 = 1/A⁸

Cross multiply

5 × A⁸ = 6

Divide both side by 5

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Take the 8th root of both sides

A = ⁸√(6/5)

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ⁿ√M = M^1/n

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Therefore,

A = (6/5)^⅛

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3 years ago
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