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Romashka-Z-Leto [24]
3 years ago
8

The Australian Open is the first of the four Grand Slam professional tennis events held each year. Victoria Azarenka beat Maria

Sharapova to win the 2012 Australian Open women’s title. During the tournament Ms. Azarenka serve speed reached kilometers per hour. A list of the Women’s Singles serve speed for the 2012 Australian Open is provided below. Player Serve Speed (km/h) S. Williams 192 S. Lisicki 192 M. Keys 191 L. Hradecka 188 J. Gajdosova 187 J. Hampton 187 B. Mattek-Sands 185 F. Schiavone 185 P. Ormaechea 185 P. Parmentier 185 N. Petrova 183 G. Arn 183 V. Azarenka 182 A. Ivanovic 182 P. Kvitova 179 M. Krajicek 179 V. Dushevina 178 S. Stosur 176 S. Cirstea 176 M. Barthel 175
a. Compute the mean, variance, and standard deviation for the serve speeds.

b. A similar sample of the 20 Women’s Singles serve speed leaders for the 2011 Wimbledon tournament showed a sample mean serve speed of 182.5 kilometers per hour. The variance and standard deviation were 33.3 and 5.77, respectively. Discuss any difference between the serve speeds in the Australian Open and the Wimbledon women’s tournaments.
Mathematics
1 answer:
klasskru [66]3 years ago
5 0

Answer:

asnwer is B

Step-by-step explanation:

mark BRAINLIEST

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Your answer would be 22mph
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If y is directly proportional to x and y = 17.5 when x=21 find y when x=39
morpeh [17]

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17.5=k(21)

k=5/6

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y=5/6 ×39

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Expand the number 1120 into its corresponding exponential form. 25 · 5 · 7 52 · 8 22 · 53 · 7 2 · 5 · 7
Eduardwww [97]

Answer:

(A) 2^{5} * 5 * 7

Step-by-step explanation:

Your question formatting made it very complicated to understand the possible answers.  Please use some notation or the equation editor next time.

So, the exponential form a way to write a number using multiplications and powers.

Let's examine the various options (if I read them correctly)

(A) 2^{5} * 5 * 7 - YES!

2^{5} is 32, so 32 * 5 * 7 = 160 * 7 = 1120

(B) 5² · 8  - NO

= 25 * 8 = 200

(C) 2² * 5³ * 7 - NO

= 4 * 125 * 7 =500 * 7 = 3500

(D) 2 · 5 · 7 - NO

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3 years ago
Lindsey bought supplies for a class project and brought the receipt to school. The 6 items cost:
DochEvi [55]

Answer:

$5

Step-by-step explanation:

$5 appeared more in the prices

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2 years ago
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No work needed, just the answer!
bezimeni [28]

Answer:

The answer to your question is: x = - 102

Step-by-step explanation:

                                          - \frac{x}{6}  + 1 = 18

                                          - \frac{x}{6} = 18 - 1

                                          - \frac{x}{6}  = 17

                                          -x = 17 x 6

                                         -x = 102

                                          x = -102

5 0
3 years ago
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