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vovangra [49]
3 years ago
5

The sum of the interior angles, s, in an n-sided polygon can be determined using the formula s=180(n-2), where n is the

Mathematics
2 answers:
Mamont248 [21]3 years ago
6 0

Answer:

9 sides.

Step-by-step explanation:

1260 = 180(n - 2)    Divide both sides by 180:

7 = n - 2

n = 7 + 2 = 9.

bazaltina [42]3 years ago
5 0

Answer:

9 sides

Step-by-step explanation:

Given the sum of the interior angles = 1260°, then

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

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

n = 9

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The price for a TV was decreased by 20% and then by 10%. By what percent was the new price lower than the original?
Finger [1]
Let's say the tv was 100$ . Reduced by 20% means the tv is now 100 - 20 = 80% of the original price.

0.8(100) = 80$
Reduced again; by 10% means that it is now 100-10 = 90% of the 80$
0.9(80) = 72$

sale price ÷ original price

72$ / 100$ = 0.72 which is 72% of the original price. Which is a mark down of:
100 - 72 = 28%

The new price is 28% lower than the original price.

7 0
3 years ago
Is it multiplication or division?...How much ch ice cream does each cone hold of four cones hold 1/2 pound
zubka84 [21]

2 ounces

using the conversion

1 pound = 16 ounces ⇒ \frac{1}{2} = 8 ounces

Divide 8 by 4 to calculate amount for each cone

amount = 8 ÷ 4 = 2 ounces


4 0
3 years ago
Find the third side. Round answer to tenths.<br><br> answer : <br> yds.
vagabundo [1.1K]

Answer:

19 yds

Step-by-step explanation:

On the assignment in the sections it tells you how to find it.

4 0
3 years ago
Find the 6th term of the geometric sequence, given the first term and common ratio a1= 5 and r=3/2
uysha [10]

<u>Answer</u>



37.96875



<u>Explanation</u>

In geometric sequence we use the formula below to find the nth of a sequence.


Tn = ar⁽ⁿ⁻¹⁾

Where a ⇒ first term

n ⇒ the term we are looking for

T₆ = 5 × (3/2)⁶⁻¹

= 5 × (3/2)⁵

= 5 × 243/32

= 1215/32

= 37 31/32

= 37.96875

6 0
3 years ago
What is 2/5 + 7/8?<br>a - 9/40<br>b - 9/13<br>c - 50/40<br>d - 51/40​
vichka [17]

Answer:

51/40

Step-by-step explanation:

2/5+7/8

(2*8/5*8)+(7*5/5*8)

16/40+35/40

=>51/40

8 0
3 years ago
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