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Ksenya-84 [330]
3 years ago
14

Find the measure of an exterior angle of a decagon

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
4 0

Answer:

add all then sides then multiple it with how many sides you have

Step-by-step explanation:

someone tell me if i am right or not

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Fantom [35]

Answer:

B

Step-by-step explanation:

m\angle ABZ+m\angle ZBC=m\angle ABC \\ \\ 12x+55=16x+15 \\ \\ 4x=40 \\ \\ x=10 \\ \\ \therefore m\angle ABZ=120^{\circ}

8 0
2 years ago
In a Black Friday sale, if you buy 5 video games for $ 39.99 each, you get 1 free. After the offer, how much does each video gam
Kruka [31]

Answer:

$200.00

Step-by-step explanation:

Round the $39.00 to $40.00 then add it all together because you can't forget the taxes.

8 0
2 years ago
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What is the mean of 31, 29, 33, 37, 33, 38, 43 and 40?
horsena [70]

Answer: 35.5

Step-by-step explanation: The mean of a data set is equal to the sum of the set of numbers divided by how many numbers are in the set.

So to find the mean of the data set shown here, let's begin by adding the numbers.

31 + 29 + 33 + 37 + 33 + 38 + 43 + 40 = 284

284 will be divided by how many numbers are in the data set which is 8 so we have to divide 284 by 8.

248 ÷ 8 = 35.5

Therefore, the mean of the data set shown here is 35.5.

6 0
3 years ago
N
vekshin1

Answer:

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5 0
3 years ago
Chelsea shows her work in finding the solution to 4−5=2+3(−3) 4 x - 5 = 2 + 3 ( x - 3 ) . After checking her answer in the origi
egoroff_w [7]

Answer:

x = -2

Step-by-step explanation:

Equation is given as;

4 x - 5 = 2 + 3 ( x - 3 )

Step 1: Expand the brackets

4x - 5 = 2 + 3x - 9

Step 2: Collect like terms

4x - 3x = 2 - 9 - (-5)

Step 3: Simplify

x = 2 - 9 + 5

x = -2

4 0
2 years ago
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