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Elanso [62]
3 years ago
12

Please help me with this question.

Mathematics
2 answers:
dangina [55]3 years ago
8 0

Answer:

a. 1.5 inches wide.

Step-by-step explanation:

If the width of the frame is x the length of the picture + frame = 2x + 12 and the width is 2x + 9 , so we have the following equation:

The total area = (2x + 9)(2x + 12) = 180

4x^2 + 24x + 18x + 108 = 180

4x^2 + 42x - 72 = 0

2(2x^2 + 21x - 36) = 0

2 (2x - 3 )(x + 12) = 0

x = 1.5 , -12  (we ignore the negative root).

igomit [66]3 years ago
7 0
The correct answer is “a”
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Answer:

6

Step-by-step explanation:

x = area to be painted

y = gallons of paint needed

we know already one point of that function/graph :

x = 800

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so, for a simple relationship between the 2 variables we can assume

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a = 2/800 = 1/400

so, we get

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y = 1/400 × 2400 = 1/4 × 24 = 24/4 = 6

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2 years ago
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Varvara68 [4.7K]
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3 years ago
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4vir4ik [10]
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klemol [59]
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Answer:

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