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Lyrx [107]
3 years ago
12

18. The figure shows a regular pentagon. Find the value of x.

Mathematics
1 answer:
andrey2020 [161]3 years ago
7 0

Answer:

108

Step-by-step explanation:

x = (n - 2)180/n

n = 5

x = (3)(180)/5

x = 108

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Blababa [14]
I think either 3 or 7

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If DF=78, DE=5x-9, and EF=2x+10, find DE.
Kazeer [188]

Given that E is a point between Point D and F, the numerical value of segment DE is 46.

<h3>What is the numerical value of DE?</h3>

Given the data in the question;

  • E is a point between point D and F.
  • Segment DF = 78
  • Segment DE = 5x - 9
  • Segment EF = 2x + 10
  • Numerical value of DE = ?

Since E is a point between point D and F.

Segment DF = Segment DE + Segment EF

78 = 5x - 9 + 2x + 10

78 = 7x + 1

7x = 78 - 1

7x = 77

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Hence,

Segment DE = 5x - 9

Segment DE = 5(11) - 9

Segment DE = 55 - 9

Segment DE = 46

Given that E is a point between Point D and F, the numerical value of segment DE is 46.

Learn more about equations here: brainly.com/question/14686792

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2 years ago
Seven times the product of negative six and a number
jonny [76]
7 times -6x, because “a number” can be replaced with x
4 0
2 years ago
Read 2 more answers
What is the value of P ? 45/20= 40.5/P?
photoshop1234 [79]

Answer:

P=18

Step-by-step explanation:

45/20= 40.5/P

45p=810

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4 0
2 years ago
Lyle and Tom are each buying houses just outside of Austin. Lyle has excellent credit,
suter [353]

Answer:

103.96

Step-by-step explanation:

The answer is 939.44 - 835. 48

we can do like: 939.44 - 835. 48 = 103.96   ( 938 -835 = 103 and 144 - 48 = 96).

Have a good day

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3 years ago
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