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Elena L [17]
4 years ago
11

What is the rule for the sum of angles?

Mathematics
2 answers:
Greeley [361]4 years ago
8 0

Answer: Memorise the rule that the sum of the interior angles of a polygon = (n-2) × 180°, and that each interior angle of a regular polygon can be calculated by the rule: (n-2) × 180° / n, where 'n' refers to the number of sides.

Step-by-step explanation:

Roman55 [17]4 years ago
6 0

Step-by-step explanation:

remeber this rule

sum=(n-2)*180°

n is no of side

take that away from 2

multiply 180

e.g triangle

3 sides

take away 2

3-2 is 1.

multiply by 180

1*180 is 180°

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christa buys an alarm clock for 45% the store increases the purchase price of the clock by 150%? what is the new sales price of
Nina [5.8K]
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3 0
4 years ago
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A used book store also started selling used CDs and videos. In the first week, the store sold 40 used CDs and videos, at 4.00 pe
masha68 [24]

Answer:

30 CDs and 10 Videos were sold.

Step-by-step explanation:

Given that a used book store also started selling used CDs and videos. In the first week, the store sold 40 used CDs and videos, at 4.00 per CD and 6.00 per video.

The sales for both CDs and videos totaled to 180.00.

Let CDs be x and Videos be y

Then we have x+y =3040

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multiply I equation by 4 and subtract from II.

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4 0
3 years ago
Please somebody help need an answer
levacccp [35]
6= 4(z+9)/y+2
6y +12 =4(z+9)
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y=(4(z+9)-12)/6
y=2z+18-6/3
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3 years ago
Help i want to know what is 5m and 10m in feet and explain if you can
tatyana61 [14]
Well, to start with, 1 meter = 3 feet.
5 meters = 15 feet.
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aleksklad [387]
Answer: A

Step by step: None
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