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ioda
3 years ago
11

Delilah went to a salon to get her hair styled. She gave her hair stylist a tip that equaled 14% of the charge for the hair styl

ing, which brought her total cost to $57.
Mathematics
2 answers:
Bogdan [553]3 years ago
3 0
I think this is the answer: 14% of 57$= 7.98$.
57$ - 7.98$= 49.02$.
her tip is 7.98$.
motikmotik3 years ago
3 0

Answer:

14% of 57$= 7.98$.

57$ - 7.98$= 49.02$.

her tip is 7.98$

Step-by-step explanation:

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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.

6 0
3 years ago
Which vector below goes from (0,0) to (2,2)? <br><br> A. c<br><br> B. a<br><br> C. b<br><br> D. d
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Answer:

i say it's A.c

I hope it helped

6 0
3 years ago
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Viktor [21]

Answer:

You:If it’s was 6 cups of citric I’d be to 32 water

Your friend: if it was 4 cups it’d be 12 water

Step-by-step explanation:

I believe your friends is more acidic because your Is being diluted more

4 0
2 years ago
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Step-by-step explanation: ap ex

3 0
2 years ago
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Alex17521 [72]
The answer is 4.57143. 
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3 years ago
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