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lys-0071 [83]
3 years ago
6

Which polygon has an interior angle sum of 1260°? A polygon has 7 sides. A polygon has 8 sides. A polygon has 9 sides. A polygon

has 10 sides.
Mathematics
2 answers:
vivado [14]3 years ago
8 0

Answer:

the answer is c

Step-by-step explanation:

Verdich [7]3 years ago
6 0

Answer:

9 sides

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

Equating to 1260 gives

180° (n - 2) = 1260 ( divide both sides by 180 )

n - 2 = 7 ( add 2 to both sides )

n = 9

Thus a polygon with 9 sides

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Six college buddies bought each other Christmas gifts. They spent:________.1. $178.622. $247.583. $228.454. $176.645. $180.226.
olasank [31]

Answer:

B. $213.30

Step-by-step explanation:

Mean amount spent on Christmas gifts = Σx / n

Where,

Σ= sum of

x= cost of each Christmas gifts

n= number of Christmas gift

Mean amount spent on Christmas gifts = Σx / n

= ( $178.622 + $247.583 + $228.454 + $176.645 + $180.226 + $268.45 ) / 6

= $1,279.98 / 6

= $213.33

Round to the nearest cent

= $213.30

Option b is the correct answer

8 0
3 years ago
The sum of (a + b) + c is equal to the sum of a + ( b + c) as explained by the ————.
natima [27]

Answer:

It is distributive property

3 0
3 years ago
Read 2 more answers
If k(x) = 5x – 6, which expression is equivalent to (k + k)(4)?
borishaifa [10]
(k + k)(4) =
5x - 6 + 5x - 6 = 10x - 12 =
10(4) - 12 = 40 - 12 = 28
The answer is 28
7 0
3 years ago
Read 2 more answers
HELP ASAP PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Ratling [72]
81.7%

This is because the area of the inside circle is roughly 18.3% of the big circle. You can get this by finding both of their areas and then dividing the inside circle by the outside one. 
8 0
3 years ago
Express this in scientific notation 90,000
SSSSS [86.1K]
9 times 10 to the 4th power
8 0
3 years ago
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