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rodikova [14]
3 years ago
5

Find the sum of the measures of the interior angles of a polygon with 12 sides​

Mathematics
1 answer:
Mrrafil [7]3 years ago
3 0

Answer:

1800

Step-by-step explanation:

(12-2)*180= 1800

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When doing a throw in how many of your feet should be touching the ground.
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What is the height of a rectangle with an area of 105 and a base of 15
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7

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Julia wants to estimate the percentage of people who submit their tax returns online. She surveys 330 individuals and finds that
larisa86 [58]

Answer:  0.0432

Step-by-step explanation:

Formula of Margin of Error :-

E=z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}

Given : Sample size : n= 400

The proportion of individuals use public transportation.=\dfrac{65}{330}\approx0.20

Level of confidence = 0.95

Significance level : \alpha=1-0.95=0.05

Critical value : z_{\alpha/2}=1.96

Substitute the values in the given formula , we get

E=(1.96)\sqrt{\dfrac{0.2(1-0.2)}{330}}\\\\\Rightarrow\ E=0.043157779593\approx0.0432

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6 0
3 years ago
Dan gets pic 'n mix when at the cinema and makes his bag up with 3 types of sweet. He picks 3 times as many cola bottles as smar
Gelneren [198K]

Answer:

1/6

Step-by-step explanation:

Let

c-----> the number of cola bottles that Dan picks

s ----> the number of smarties that Dan picks

m ---> the number of marshmallows that Dan picks

we know that

c=3s ----> equation A

m=2s ---> equation B

we know that

To find out the proportion of the bag of sweets that are smarties, divide the number of smarties by the total of sweets

The total of sweets is equal to

(c+s+m)

substitute equation A and equation B in the total of sweets

(3s+s+2s) =6s

Find the proportion

s/6s

Simplify

1/6

3 0
3 years ago
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