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Valentin [98]
3 years ago
12

Find the area of the shaded region. Use 3.14 for pi. Round to the nearest tenth. r = 15 110

Mathematics
2 answers:
Reika [66]3 years ago
8 0

Answer: 490.6

Step-by-step explanation:

There are 360 degrees of a triangle.  As 110 degrees are not shaded, you can determine that 250/360, or 25/36 of the degrees in the triangle are shaded.  Then simply find the area of the circle by doing πr^2 and getting 706.5.  Then simply multiply 706.5 * 25/36 to get 490.625, or 490.6 when rounding to the nearest tenth

Svetradugi [14.3K]3 years ago
5 0

Answer:

110/360=11/36 (I will get back to this)

The area of the circle would be 225 pi using the formula pi r^2. So you multiply 225pi by 11/36 to find the area.  This rounds to 215.98

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Vladimir [108]

Answer:

  • a = 3/2
  • b = -1/2

Step-by-step explanation:

  \dfrac{\sqrt{5}-1}{\sqrt{5}+1}=\dfrac{(\sqrt{5}-1)(\sqrt{5}-1)}{(\sqrt{5}+1)(\sqrt{5}-1)}\\\\=\dfrac{5-2\sqrt{5}+1}{5-1}=\dfrac{6-2\sqrt{5}}{4}\\\\=\dfrac{3}{2}-\dfrac{1}{2}\sqrt{5}

Comparing this to the form a+b√5, we see that ...

  a = 3/2

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3 years ago
There are 20 boys and 25 girls in a classroom what is the ratio of girls to boys
VMariaS [17]
20:25 now simp that and you will have your answer
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4 years ago
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BlackZzzverrR [31]

Answer: $10.90

Step-by-step explanation:

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6 0
3 years ago
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valentina_108 [34]
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Then, there was a tip of 18%.
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To find the percent of something, first you need to put the percent as a decimal.

8% in decimal form is 0.08 (If you think about it literally, they're both 8 hundredths)

Finally, just multiply the percent in decimal form by the number.

37.50 dollars × 0.08 = 3 dollars.<em />
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kvasek [131]

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5 0
3 years ago
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