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jeka94
3 years ago
6

Suppose a2 + 4a + 3 represents the area of a rectangle. What is the perimeter of that rectangle? A) 2a + 4 B) 4a + 8 C) 6a + 12

D) 8a + 16
Mathematics
1 answer:
allsm [11]3 years ago
5 0
A² + 4a + 3
(a+3)(a+1)         This is the length and the width of the rectangle.

Perimeter = length + length + width + width
P = (a+3) + (a+3) + (a+1) + (a+1)
P = a + a + a + a + 3 + 3 + 1 + 1
P = 4a + 6 + 2
P = 4a + 8

B) 4a + 8 
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On a group project, Mira does 24 math questions while Grace does half as many questions. If they have to complete 50 questions,
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GCF       48          60
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8 0
2 years ago
25. angle EFG and angle GFH are a linear pair,
vivado [14]

Answer:

m<EFG = 69^{o}, and m<GFH = 111^{o}

Step-by-step explanation:

Linear pair angles are two supplementary angles.

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m<EFG + m<GFH = 180^{o}

2n + 21 + 4n + 15 = 180^{o}

collecting like terms, we have:

6n + 36 = 180^{o}

6n = 180^{o} - 36

6n = 144^{o}

divide both both sides by 6,

n = 24^{o}

Therefore,

m<EFG = 2n + 21

            = 2 x 24^{o} + 21

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m<GFH = 4n + 15

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            = 96 + 15

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Thus m<EFG = 69^{o}, and m<GFH = 111^{o}

7 0
3 years ago
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