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elixir [45]
3 years ago
15

Questions 11 & 12, with an explanation - if possible!!

Mathematics
1 answer:
IrinaVladis [17]3 years ago
5 0
X² - 3x - 2 = 0
x = -(-3) ± √((-3)² - 4(1)(-2))
                     2(1)
x = 3 ± √(9 + 8)
              2
x = 3 ± √(17)
           2

4x² + 3x + 5
b² - 4ac
(3)² + 4(4)(5)
9 + 4(20)
9 + 80
89
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irakobra [83]

Answer:

m<6 is 102°

Step-by-step explanation:

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A watercolor painting is 24 inches long by 11 inches wide. Ramon makes a border around the watercolor painting by making a mat t
sergeinik [125]

Given: It is given that the length of the painting is 24 inches and the width is  11 inches.

To find: Area of the mat

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So, the area of the painting is:

\text{Area of painting}=l\times b

\text{Area of painting}=24\times 11

\text{Area of painting}=264 \text{ in}^2

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The width of painting with mat = 11 in + 3 in + 3 in = 17 in

\text{Area of painting with mat}=30\times 17

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Now to calculate the area of mat subtracts the area of painting from the area of the mat.

\text{Area of mat}=\text{Area of painting with mat}-\text{Area of painting}\\

\text{Area of mat}=510-264

\text{Area of mat}=246 \text{ in}^2

Hence, the area of the mat is 246 in².

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