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LuckyWell [14K]
3 years ago
9

Any two angles whose sum is 180 degrees are ______

Mathematics
2 answers:
Dmitriy789 [7]3 years ago
5 0

Any two angles whose sum is 180 degrees are supplementary.

Supplementary angles are a pair of angles that add up to 180 degrees.

hope this helps

labwork [276]3 years ago
5 0

two angles are 90 and 90 = 180

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Which answer is the approximate standard deviation of the data set?
Anna35 [415]

Answer:

3.4

Step-by-step explanation:

Standard deviation of a population is defined as:

σ² = ∑(xᵢ − μ)² / n

The standard deviation of a sample is defined as:

s² = ∑(xᵢ − x)² / (n - 1)

It's not clear which one we have, so let's calculate both.

First, we must find the mean.

μ = (5+12+15+10+12+6+8+8) / 8

μ = 9.5

Now we find the squares of the differences:

(5-9.5)² + (12-9.5)² + (15-9.5)² + (10-9.5)² + (12-9.5)² + (6-9.5)² + (8-9.5)² + (8-9.5)²

= 80

Divide by n:

σ² = 80 / 8

σ² = 10

And take the square root:

σ = √10

σ ≈ 3.2

That's not one of the answers, so let's try the standard deviation of a sample instead of a population.

Instead of dividing by n, we'll divide by n-1:

s² = 80 / 7

And take the square root:

s = √(80/7)

s ≈ 3.4

So that must be it.

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3 years ago
Miko’s restaurant bill was $16. She used the expression 1.18(16) to find the total cost including an 18% tip.
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The answer is (1+0.18)16.

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Fiesta28 [93]

Answer:

x-intercept: -1

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Step-by-step explanation:

The intercept for each is where the other coordinate is at 0.

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Answer:

70%

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56 vanilla cupcakes

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